Calculators
Irregular-Income Budget Calculator for Freelancers
Put in your lowest month, your essentials, and your buffer — and see the monthly salary you can actually pay yourself. Your numbers, not a generic budget.
Your last three months: $6,000, $2,800, $0. Which one do you budget on? If you pick $6,000, the $0 month breaks you. If you pick $2,800, the $6,000 month builds your buffer. The average lies to you in both directions.
The calculator
Try your own numbers
Budget on your worst recent month, not your best. Good months then become a bonus, not a spending spree.
Your floor. Be honest — this is the whole point.
For comparison only. Don't budget on it.
Rent, food, bills, transport. The non-negotiables.
Everything you could pause in a bad month.
Your floor is $200.00 short of your spending
Something has to give before a bad month arrives: trim flexible spending, or build a buffer first. Cutting the tax reserve is not the answer — that bill still comes.
Formula: budget = lowest recent month. Surplus = floor − (essentials + flexible spending).
Estimate only. If you have less than 6 months of history, use the lowest month you actually have and re-run this every month.
Baseline monthly expenses — the fixed, essential monthly costs you must pay to keep your household and your freelance work running in a normal month: housing, utilities, groceries, transport, insurance premiums, minimum debt payments, and the subscriptions and tools you cannot work without, averaged over recent normal months. Baseline expenses exclude discretionary spending, one-off purchases, savings contributions, retirement contributions, and the tax reserve. Tax money is a liability held in a separate account, not spending, and it is never counted inside baseline expenses.
Guides that explain these inputs
A worked example, with the maths shown
Lowest month: $2,800. Essentials $2,400, flexible $600 — total $3,000. That's $200 over the floor, so something trims before the bad month, not during it. Cut flexible spending to $400 and the floor leaves $0 spare — tight, but honest. In a $4,500 average month, the $1,700 above the floor goes straight to the buffer.
The formula
Budget floor = lowest month in the last 6 months. Surplus = floor − (essential + flexible spending). Surplus goes to the buffer account.
Assumptions and limits — read this before you trust the number
| Assumption | What it means for you |
|---|---|
| Six months of history is ideal | With less history, use the lowest month you have and re-run this monthly. The floor gets more honest as your history grows. |
| Buffer is not an emergency fund | The buffer (1–3 months) smooths normal variation. The emergency fund (6–12 months) covers shocks. Don't spend one as if it were the other. |
| Tax money is separate | Set tax aside before you budget the rest. A budget built on pre-tax income is a budget built on money that isn't yours. |
Last checked: 25 October 2026. Figures are illustrative examples, not current IRS limits, unless stated. Tax rules change — re-check before filing.
What to do with the result
Use it as a starting point, then adjust for your real costs, your real months, and your real tax position. If the number surprises you, that's useful information — it usually means an input was optimistic, not that the maths is wrong.
Questions freelancers actually ask
What about a $0 month?
You pay yourself the same amount from the buffer, cut flexible spending, and chase overdue invoices — in that order. The buffer exists for exactly this month.
My income is growing — is the floor still useful?
Yes, until the growth is sustained for several months. One great month is not a new floor; it's a buffer contribution.
Related guides
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Educational only. These numbers are estimates from the assumptions shown on the page — not advice for your situation, and not a prediction of what you'll owe or save. Tax and retirement rules change. Consult a tax professional before you act on a tax or retirement figure.