Economics Basics

Recession

Everyone repeats the same definition — two quarters of falling GDP — and the committee that actually dates U.S. recessions says on its own website that it does not use that rule. Here is what it uses instead, and why the official answer always arrives too late to be useful.

Also called: economic contraction · downturn · business cycle contraction · slump

Reviewed 12 August 2026 · Sourced from the NBER's Business Cycle Dating Committee, the BEA, the BLS and the Federal Reserve

The short version

A recession is a significant decline in economic activity that is spread across the economy and lasts more than a few months — a judgment about depth, diffusion and duration, not a formula you can check against two quarters of GDP.

It exists as a labeled thing because somebody has to draw the lines. In the United States that somebody is the Business Cycle Dating Committee of the National Bureau of Economic Research, a private nonprofit rather than a government agency. It waits for the data to settle before naming a peak or a trough, which means the official answer to “are we in a recession” is published months to years after the question stopped being useful. Everything people actually watch in real time is a substitute for that answer, and every one of those substitutes has been wrong.

Key takeaways
  • The NBER's definition is “a significant decline in economic activity that is spread across the economy and that lasts more than a few months.” The three tests it names are depth, diffusion and duration, and one can partly offset another.
  • The two-consecutive-quarters rule is not the definition. The NBER's own FAQ calls it what “the financial press often states” and answers that “most of the recessions identified by our procedures do consist of two or more consecutive quarters of declining real GDP, but not all of them.”
  • 2022 is the case in point. Headlines called a recession off two negative quarters; the NBER dated nothing. As the BEA series reads today those quarters are −1.0% and +0.6% — revised into a single negative quarter, so the “technical recession” no longer exists in the data.
  • The declaration comes too late to act on. Elapsed time between a turning point and its announcement has run 4 to 21 months. The February 2020 peak was announced 8 June 2020; the April 2020 trough not until 19 July 2021 — fifteen months after the recession had already ended.
  • Six monthly measures do most of the work: real personal income less transfers, nonfarm payroll employment, household-survey employment, real personal consumption, real manufacturing and trade sales, and industrial production. On a quarterly basis the committee gives real GDI equal weight to real GDP.
  • “Depression” has no official definition at all. “The NBER does not separately identify depressions in its business cycle chronology.” The 1929–1933 contraction it does date ran 43 months against 18 for 2007–2009 and 2 for 2020.
  • Unemployment does not rise evenly. February to April 2020: workers 25 and over without a high school diploma went from 5.7% to 21.2%; those with a bachelor's degree or higher went from 1.9% to 8.4% (BLS, seasonally adjusted).

What a recession actually is

Five months into a warehouse job, a man reads that the economy might be in a recession. He wants one thing out of that sentence: is his job about to go. He looks up what a recession is, and every page says the same thing — two consecutive quarters of falling GDP. He checks the last two quarters. Both positive. He closes the tab no better off, and the definition he just read is not the definition.

Here is the real one, from the body that dates U.S. recessions. The National Bureau of Economic Research defines a recession as “a significant decline in economic activity that is spread across the economy and that lasts more than a few months.” Three words in that sentence carry the whole test, and the committee names them: depth — the decline has to be significant, not a rounding error; diffusion — it has to be spread across the economy rather than confined to one industry; and duration — it has to last more than a few months.

Those three are not a checklist. They trade against each other, in the committee's own words: “while each of the three criteria—depth, diffusion, and duration—needs to be met individually to some degree, extreme conditions revealed by one criterion may partially offset weaker indications from another.” That sentence is why the two-month collapse of spring 2020 was designated a recession despite failing the duration test outright. The committee said so at the time: “the unprecedented magnitude of the decline in employment and production, and its broad reach across the entire economy, warrants the designation of this episode as a recession, even if it turns out to be briefer than earlier contractions.”

The one-sentence version

A recession is a decline in activity deep enough, broad enough and long enough that a committee of academic economists says so afterward. It is a judgment, not a calculation.

That is unsatisfying, and it is the honest answer. The ingredients of the judgment are all published monthly, by name — which is the second half of this page.

Why the two-quarters rule is wrong

This is the most repeated wrong fact in economics coverage, and the NBER answers it directly on its own FAQ page. It frames the question as something the press says, not something it uses: “The financial press often states the definition of a recession as two consecutive quarters of decline in real GDP.” The answer concedes the overlap and then refuses the rule: “Most of the recessions identified by our procedures do consist of two or more consecutive quarters of declining real GDP, but not all of them.”

Its reasons are structural rather than fussy. It works from monthly measures, because a quarter is a blunt instrument for locating a turning point in a month. It weighs how significant a decline is, not merely its sign — a quarter at −0.1% and a quarter at −6% are not the same event. And it does not treat GDP as the sole read on output: “in examining the behavior of production on a quarterly basis, where real GDP data are available, we give equal weight to real GDI.” Real gross domestic income measures the same economy from the income side, and the two disagree more often than people assume.

2022 is the case that settles it. On 28 July 2022 the BEA's advance estimate reported real GDP falling at an annual rate of 0.9% in the second quarter, following a 1.6% decline in the first. Two negative quarters. The word “recession” ran everywhere for a month. The NBER dated nothing, and has still dated nothing.

Then the revisions came in, which is the part nobody followed up on. The same two quarters, as first published and as the BEA series reads in August 2026:

QuarterAs published 28 Jul 2022As the series reads now
2022 Q1−1.6%−1.0%
2022 Q2−0.9%+0.6%

Annual rates, seasonally adjusted. The second quarter is now positive. The two consecutive negative quarters the entire “technical recession” argument rested on do not exist in the current data. A rule that can be revised out from under you a year later is not a definition.

Watch this

GDP is an estimate that gets revised for years, so any rule built on the sign of a single quarterly print inherits every one of those revisions. That is a reason to distrust the rule, not the BEA — revising an estimate toward the truth is the job working correctly.

Who declares one, and how late

No agency of the U.S. government declares a recession. The NBER is “a private, nonprofit organization”, and it is its Business Cycle Dating Committee — a small group of academic economists — that identifies peaks and troughs in U.S. economic activity. A peak is the last month of an expansion, so it is the month the recession starts. A trough is the last month of the contraction, where the next expansion begins.

The committee dates those months retrospectively, and does not pretend otherwise: “There is no fixed timing rule because the committee waits long enough to avoid any doubt about the existence of a peak or trough.” Its own account of the lag between a turning point and its announcement is 4 to 21 months, and the 2020 recession shows both ends of that range inside one cycle:

Turning pointMonth it happenedDate announcedLag
Peak (recession begins)February 20208 June 2020about 4 months
Trough (recession ends)April 202019 July 2021about 15 months

Read the second row again. The recession ended in April 2020, and that was confirmed in July 2021. For fifteen months the honest answer to “is it over” was that nobody official would say.

The consequence, stated plainly

You cannot use the official declaration to make a decision, because it arrives after the event. By the time a recession is dated, the layoffs have happened, the hiring freeze has thawed or hardened, and the market has moved on both. Anyone waiting for the announcement is not early, and they are not even on time.

Two things follow. Because the committee waits, it does not forecast — it publishes no probability of a future recession and never has. And as of August 2026 the most recent turning points in its chronology remain the February 2020 peak and the April 2020 trough. Nothing has been dated since.

What the committee actually looks at

The committee's raw material is public, monthly and free. Its determinations rest, in its words, on “a range of monthly measures of aggregate real economic activity published by the federal statistical agencies and other organizations.” The six it names are these:

MeasurePublished byWhat it captures
Real personal income less transfersBEAIncome earned rather than received — so a stimulus check does not read as a recovery
Nonfarm payroll employmentBLSJobs counted at the employer — the broadest monthly hiring read
Household survey employmentBLSJobs counted at the household, catching self-employment payrolls miss
Real personal consumption expendituresBEAWhat households actually spend, inflation removed
Real manufacturing and trade salesBEAGoods moving through wholesale and retail, inflation removed
Industrial productionFederal Reserve BoardPhysical output of factories, mines and utilities

Notice what dominates that list. Two of the six are employment, counted two different ways, and two more are spending. Real GDP is not on it at all, because GDP is quarterly.

Notice what is absent: the stock market, house prices, consumer confidence and the yield curve. None of them measures current activity. Markets are a forecast, and forecasts are what the committee refuses to make.

Where you'll see it

Four of these six sit on this site's economic markets page, grouped the way the Economics for Traders course groups them — growth, inflation, rates, labor and household. Every figure carries its source series and release date. Free, no account.

Inflation is not on the list either. A recession is defined on real activity — volumes, after prices are removed. Prices are a separate question, handled through inflation and the consumer price index, and an economy can contract while prices rise or expand while they fall.

Recession, depression, technical recession, slowdown

Four words get used interchangeably, and only one of them has a body behind it.

TermWho defines itWhat it means
RecessionNBER Business Cycle Dating CommitteeA significant, broad decline in activity lasting more than a few months, dated peak to trough. Contractions since 1945 have averaged 10.3 months
DepressionNobodyNo official definition exists. “The NBER does not separately identify depressions in its business cycle chronology” — the 1929–1933 contraction is simply a contraction in the table, 43 months long
Technical recessionConvention onlyTwo consecutive quarters of falling real GDP. Not the NBER's test, and not durable against revision
Growth recession / slowdownConvention onlyGrowth stays positive but falls below what the economy needs to absorb new workers, so unemployment drifts up without a contraction

The depression row is worth sitting with. There is no threshold — no 10% decline, no three-year rule, no agency that certifies one. What the NBER's own table does show is scale:

ContractionPeakTroughMonths
The Great DepressionAugust 1929March 193343
The Great RecessionDecember 2007June 200918
The 2020 recessionFebruary 2020April 20202

Forty-three months against two, both recessions in the same chronology. The name of the episode has never been the useful information. Depth and duration are, and those are what the table holds.

The signals people watch instead, and how each fails

Because the official answer arrives late, everything used in real time is a substitute. Each has a track record, each has been wrong, and the wrong half is the part worth knowing.

The yield curve

Short-term Treasury yields paying more than long-term ones. It has the longest documented record on this list, and a documented miss: the curve inverted in 2022, stayed inverted into 2024, and the NBER has dated no recession since April 2020. The Federal Reserve Bank of San Francisco puts the historical delay between the spread turning negative and a recession beginning at six to twenty-four months — wide enough to contain most of a bull market. Full treatment, including the one documented false positive, is on yield curve inversion. What it is really pricing is rate cuts — central banks answer a downturn by cutting the federal funds rate, which is why rate expectations and recession expectations are so tangled.

The Sahm rule

A labor-market trigger rather than a forecast. It fires when “the three-month moving average of the national unemployment rate (U3) rises by 0.50 percentage points or more relative to the minimum of the three-month averages from the previous 12 months.” Its origin matters: the economist Claudia Sahm proposed it in Direct Stimulus Payments to Individuals (Hamilton Project, 2019) as an automatic trigger for sending stimulus payments, so relief would not wait on Congress. It was never built to tell an individual whether a recession had begun.

Its failure mode is documented by its own author. The rule triggered in 2024 and no NBER-dated recession followed. Writing on her own newsletter in December 2023, Sahm cautioned that “the Sahm rule is a historical pattern, and this time could easily be different,” that “even if it does trigger, a recession is not a done deal,” and — the line worth keeping — that “being data-driven is good, but being data-ridden is not.” The originator warning against mechanical use of her own indicator is the most useful sentence on this page.

Initial jobless claims

First-time unemployment filings, published weekly, the fastest labor read available. Its failure mode is noise: holidays, plant shutdowns, strikes and storms all move it, so a single week is close to meaningless. Only a multi-week direction carries information — and establishing one gives back the speed advantage that made you look.

A leading index

The best known is The Conference Board's Leading Economic Index, a proprietary composite from a private organization — not a government series, and not free. Its failure mode is on the record: its recession signal was tripped through 2022 and 2023, no NBER-dated recession followed, and by 19 August 2024 The Conference Board's own release stated that “the six-month annual growth rate no longer signals recession ahead.”

Credit spreads

The extra yield lenders demand from risky borrowers; credit markets often notice trouble before stock markets do. The failure mode is asymmetry — spreads stay tight right up until they are not, so a calm reading is an absence of evidence, not an all-clear.

Where you'll see it

This site's economic markets page carries five recession signals with the documented failure mode printed next to each one: the 10-year minus 2-year spread, the 10-year minus 3-month spread, the unemployment rate, initial jobless claims and the high-yield spread. The unemployment panel there uses a year-over-year comparison rather than the Sahm rule and says so — a rougher measure, offered as direction rather than a trigger. Free, no account.

One thing you will not find here: a hit rate. No percentage of the form “right 80% of the time” appears on this page. The U.S. record since 1945 holds roughly a dozen recessions, and a percentage computed on a dozen episodes is a story, not a statistic. Where a figure like the six-to-twenty-four-month range appears above, the publishing body is named beside it.

One failure mode belongs to all of them at once. The February 2020 recession was caused by a pandemic, and no spread, claims number or composite index contains information about a virus. The 2019 inversion was followed by a recession that had nothing to do with the mechanism the inversion measures. Being followed by a recession and predicting one are not the same event.

What a recession does to somebody with no cushion

For most of the people this site is written for, a recession is not a macro debate. It is the thing that takes the job first. That is not a feeling — it shows up in the published data four separate ways, and they land at different times.

1. Unemployment does not rise evenly

The aggregate unemployment rate is an average, and averages hide who absorbs the damage. The BLS publishes it broken out by educational attainment for workers 25 and over. Two recessions, seasonally adjusted:

Workers 25+Apr 2007Oct 2009Feb 2020Apr 2020
No high school diploma7.1%15.2%5.7%21.2%
Bachelor's degree or higher1.9%4.7%1.9%8.4%
All workers (16+)10.0%3.5%14.8%

In 2007–2009 the rate for workers without a diploma rose 8.1 percentage points against 2.8 for degree holders. In 2020 it was 15.5 against 6.5. Both groups got hurt; one got hurt two to three times as hard, and it is the group with the least saved to absorb it.

2. Hours get cut before jobs do

Layoffs are the visible event and usually not the first one. Employers trim hours first, and the BLS counts that directly: people working part time who want full-time work and cannot get it. That count roughly doubled in both recessions.

Employed part time for economic reasonsLevel
December 2007 (the peak month)4.62 million
January 20108.53 million
February 2020 (the peak month)4.38 million
April 202010.88 million
July 20264.80 million

That matters more than it looks. Somebody whose hours are cut is still employed, so the unemployment rate does not move for them and they do not qualify for most things that trigger on job loss. The income is gone anyway.

Worked example

A warehouse worker earns $17.00 an hour and has been scheduled 38 hours a week. Orders slow, and the schedule drops to 28 hours. Nobody is laid off and nothing is announced.

Before: 38 × $17.00 = $646 a week, or $646 × 52 = $33,592 a year — about $2,799 a month gross.

After: 28 × $17.00 = $476 a week, or $476 × 52 = $24,752 a year — about $2,063 a month gross.

$170 less a week. $736 less a month. $8,840 less a year — a 26% pay cut, with no layoff, no notice and no change in the unemployment rate.

3. Credit tightens exactly when it is needed

The Federal Reserve surveys senior loan officers every quarter and asks whether they have tightened standards. The net percentage tightening on credit card loans specifically:

SurveyNet % of banks tightening card standards
Q4 200858.8%
Q1 200958.8%
Q2 202038.5%
Q3 202071.7%
Q3 20266.7%

Tightening means lower limits on existing cards, fewer approvals, and thin files declined that would have been approved a year earlier. The mechanism is risk management, not malice, and the effect is the same either way: borrowing capacity contracts on the same schedule as income. Anyone whose plan for a bad month is a credit card holds a plan that shrinks exactly when the bad month arrives.

4. A hiring freeze is invisible and it targets one group

The last mechanism has no announcement at all. When a firm stops hiring, nobody is fired, no release goes out, and the payroll number simply stops growing. The person harmed is the one who does not have the job yet — a first job, or a return to work after prison, after caregiving, after treatment, after a move. A freeze shortens nobody's paycheck. It lengthens the search, and a longer search is what somebody with no cushion cannot fund.

The phrase for this is “last hired, first fired.” It is a saying, not a statistic, which is why it is filed as unverified below. What is measurable is what the three tables show.

What this section is not

It is not a prediction and not a prompt to do anything specific. As of July 2026 the unemployment rate was 4.1%, the NBER has dated no recession since April 2020, and involuntary part-time work sits close to where it was before both of the last two downturns. The mechanism is the same one every time, which is why it is worth understanding while it is not happening.

What this site already has on it, all free, no account: emergency fund for how many months a given cushion actually covers and where the three-to-six-month figure comes from; Stage 1 · Survive for banking and income in the next thirty days; Stage 2 · Stabilize for bill triage and the first cushion; after financial collapse if the downturn already landed; and starting over after prison, written for exactly the position a hiring freeze punishes hardest.

What is confirmed, what is not, and what is convention

Every figure on this page sits in one of three buckets. Mixing them is how a page like this goes wrong.

StatusClaimEstablished by
ConfirmedThe definition; the depth / diffusion / duration test; the rejection of the two-quarter rule; the six monthly measures; equal weight to real GDI; no fixed announcement timing; the 4-to-21-month lag; no separate identification of depressionsNBER, Business Cycle Dating Procedure: FAQ
ConfirmedFebruary 2020 peak and April 2020 trough, announced 8 June 2020 and 19 July 2021; the 43 / 18 / 2-month durations; the 10.3-month average since 1945NBER announcements and the contractions table
Confirmed2022 Q1 and Q2 real GDP at −1.6% and −0.9% as published, −1.0% and +0.6% as revisedBEA news release and the BEA series on FRED
ConfirmedEvery unemployment, involuntary part-time and bank-tightening figure above, with its monthBLS and the Federal Reserve's Senior Loan Officer Survey, via FRED
ConfirmedThe Sahm rule formula and its 2019 origin as a stimulus trigger; Sahm's own cautions; The Conference Board's August 2024 statementFRED notes, the Hamilton Project proposal, Sahm's newsletter, The Conference Board
Unverified“Last hired, first fired” as a measured regularity. A common saying, not traced to a primary source. The education and involuntary-part-time gaps above are what is measurable, and they are what this page rests onNot traced
UnverifiedAny hit rate for any recession signal. None appears here. The circulating percentages rest on roughly a dozen post-1945 episodes and no primary source publishes oneDeliberately omitted
Convention“Technical recession” meaning two negative quarters — widely used, defined by nobody, revision-fragileUsage only
ConventionAny numeric threshold for a “depression” — a 10% decline, three years, or similar. No body defines the wordUsage only
Convention“Growth recession” for below-trend growth with rising unemploymentUsage only
ConventionThe 0.50 percentage point Sahm threshold is a chosen trigger value for a policy proposal, not a constant derived from theorySahm's own framing
ConventionThree to six months of expenses as an emergency-fund target — a rule of thumb with no agency behind it. See emergency fundUsage only

What trips people up

Frequently asked questions

What is a recession?

A recession is a significant decline in economic activity that is spread across the economy and lasts more than a few months. That wording is the National Bureau of Economic Research's own definition, and the three tests behind it are depth, diffusion and duration — how large the decline is, how widely it is spread, and how long it lasts. The NBER adds that extreme conditions on one of those criteria can partly offset weaker readings on another, which is how a two-month collapse in 2020 still counted. It is a judgment made by a committee after the fact, not a formula you can compute.

Is a recession two consecutive quarters of negative GDP growth?

No, and the NBER says so on its own website. Its FAQ describes that rule as something the financial press often states, then answers that most of the recessions identified by its procedures do consist of two or more consecutive quarters of declining real GDP, but not all of them. The committee works from monthly measures rather than quarterly ones, weighs how significant a decline is rather than just its sign, and gives real gross domestic income equal weight to real GDP. 2022 is the clearest example: two quarters printed negative, no recession was dated, and the second quarter has since been revised to positive 0.6%.

Who officially declares a recession in the United States?

The Business Cycle Dating Committee of the National Bureau of Economic Research, which is a private nonprofit organization rather than a government agency. No federal department declares recessions. The committee names a peak, the last month of an expansion, and a trough, the last month of the contraction. It waits until the underlying data have settled, so its announcements come well after the event. As of August 2026 its most recent turning points are still the February 2020 peak and the April 2020 trough, with nothing dated since.

How long after a recession starts is it announced?

The NBER states there is no fixed timing rule, because the committee waits long enough to avoid any doubt about the existence of a peak or trough, and it puts the historical elapsed time between a turning point and its announcement at four to twenty-one months. The 2020 cycle shows both extremes: the February 2020 peak was announced on 8 June 2020, roughly four months later, while the April 2020 trough was not announced until 19 July 2021, about fifteen months after the recession had already ended. The practical consequence is that the official declaration cannot inform a decision, because it arrives after the thing it describes.

What indicators does the NBER look at?

Six monthly measures do most of the work: real personal income less transfers, nonfarm payroll employment, household survey employment, real personal consumption expenditures, real manufacturing and trade sales, and industrial production. Those come from the BEA, the BLS and the Federal Reserve Board. On a quarterly basis, where real GDP is available, the committee gives real gross domestic income equal weight alongside it. Notably absent are stock prices, house prices, consumer confidence and the yield curve, none of which measures current activity.

What is the difference between a recession and a depression?

A recession has a definition and a body that dates it. A depression has neither. The NBER states plainly that it does not separately identify depressions in its business cycle chronology, and no other agency defines the word, so any threshold you see quoted — a ten percent decline, three years, anything similar — is convention rather than a rule. What the NBER's table does show is scale: the 1929 to 1933 contraction ran 43 months, the 2007 to 2009 contraction 18 months, and the 2020 contraction 2 months. All three are contractions in the same chronology.

Do recessions affect everyone equally?

No, and the published data are blunt about it. Between February and April 2020 the unemployment rate for workers 25 and over without a high school diploma went from 5.7% to 21.2%, while the rate for those with a bachelor's degree or higher went from 1.9% to 8.4%. Hours also get cut before jobs do: the number of people working part time because they cannot get full-time work went from 4.38 million to 10.88 million over the same two months, and none of those people show up as unemployed. Bank lending standards tighten at the same time, so borrowing capacity shrinks on the same schedule as income.

Related terms

Where to go next

Sources
  1. National Bureau of Economic Research, Business Cycle Dating Procedure: Frequently Asked Questions — the definition of a recession, the depth / diffusion / duration test, the rejection of the two-consecutive-quarters rule, the six monthly measures, equal weight to real GDI, the absence of a fixed announcement timing rule, the 4-to-21-month lag, and the statement that depressions are not separately identified.
  2. National Bureau of Economic Research, Business Cycle Dating and About the NBER — that the NBER is a private, nonprofit organization and that its Business Cycle Dating Committee is what identifies peaks and troughs in U.S. economic activity.
  3. National Bureau of Economic Research, US Business Cycle Expansions and Contractions — the February 2020 peak and April 2020 trough as the most recent turning points, the 43-month 1929–1933 contraction, the 18-month 2007–2009 contraction, the 2-month 2020 contraction, and the 10.3-month average contraction since 1945.
  4. National Bureau of Economic Research, Business Cycle Dating Committee Announcement, June 8, 2020 and Announcement, July 19, 2021 — the announcement dates for the February 2020 peak and the April 2020 trough, and the “even if it turns out to be briefer than earlier contractions” language.
  5. U.S. Bureau of Economic Analysis, Gross Domestic Product, Second Quarter 2022 (Advance Estimate), 28 July 2022, and the same series today at FRED A191RL1Q225SBEA — 2022 Q1 and Q2 at −1.6% and −0.9% as published, and −1.0% and +0.6% as revised.
  6. U.S. Bureau of Labor Statistics, via FRED: Unemployment Rate, Less Than a High School Diploma, 25 Yrs. & Over, Bachelor's Degree and Higher, Employment Level, Part-Time for Economic Reasons, and Unemployment Rate (UNRATE) — every education, involuntary-part-time and headline unemployment figure on this page, all seasonally adjusted.
  7. Board of Governors of the Federal Reserve System, Senior Loan Officer Opinion Survey on Bank Lending Practices, via FRED DRTSCLCC — the net percentage of domestic banks tightening standards on credit card loans, and Federal Reserve Bank of San Francisco, Economic Forecasts with the Yield Curve — the six-to-twenty-four-month delay between a negative term spread and a recession.
  8. Claudia Sahm, Direct Stimulus Payments to Individuals (The Hamilton Project, 2019), the series notes at FRED SAHMREALTIME, and Sahm's own newsletter post The Sahm rule: step by step, 7 December 2023 — the 0.50 percentage point formula, the rule's origin as an automatic stimulus trigger, and her own cautions against mechanical use.
  9. The Conference Board, The Conference Board Leading Economic Index for the U.S. Declined in July, 19 August 2024 — the statement that the six-month annual growth rate no longer signaled recession ahead, after the index's 2022–2023 signal was not followed by an NBER-dated recession.

The figures on this page are checked against the source that publishes them, and dated. Published rates move after the release named above — the linked source always carries the current number. This page explains a term; it does not recommend a product.