How the maths works
How to use it
- Enter what you have set aside right now. Zero is a normal starting point.
- Enter what you can realistically save each month — the amount you would still manage in a bad month.
- Enter your essential monthly expenses only: housing, food, transport, utilities, minimum debt payments. Not your whole budget.
- Aim at the $500 and $1,000 columns first. The three- and six-month figures are the eventual destination, not the starting target.
A worked example
Starting from $0 and saving $100 a month, a $500 buffer takes 5 months and $1,000 takes 10 months. With essential expenses of $2,000 a month, a full three-month fund is $6,000 — 5 years at that rate. That is precisely why leading with the three-month number is how people talk themselves out of starting. The $1,000 arrives in ten months and does most of the practical work.
Where this sits in the Financial Literacy resource
A calculator tells you where you are. It does not tell you what to do next, and a number without a plan behind it tends to produce anxiety rather than progress. These stages are free, need no account, and cover the decision this calculator is measuring.
Common questions
How much should I have in an emergency fund?
The first target is $1,000. Its job is narrow and specific: stop a car repair or a copay from turning into new credit card debt or a payday loan. The three-to-six month fund is the eventual goal, and it comes after high-interest debt is cleared, not before. Starting with the larger number is the single most common reason people never start at all.
Where should I keep my emergency fund?
In a separate savings account you can reach within a day or two, not in checking where it gets spent by accident, and not invested where its value can fall exactly when you need it. A high-yield savings account at a different bank than your checking adds useful friction. If you have a ChexSystems history, second-chance accounts exist.
Should I build an emergency fund or pay off debt first?
Build the small buffer first, then attack the debt, then finish the fund. Without any buffer, the next unexpected expense goes straight back onto the card you are trying to clear, and the progress resets. A $1,000 cushion is what makes debt payoff stick rather than loop.
What this calculator is not
It is an educational model, not a projection and certainly not advice. It knows nothing about your income, your state, your debts or your benefits status, and it ignores taxes and fees unless the page says otherwise. If you receive SSI or SSDI some of this maths works differently and getting it wrong can cost you eligibility — start with the Disability Wealth Guide instead. Our sourcing and correction policy is on the editorial standards page.
Nothing here is stored. Every calculation runs in your browser. No numbers are transmitted, logged or saved to any server, and no account is required. Close the tab and it is gone.