You have $2,400 in checking. Is that a good week or a trap? Rent is due before your next client pays, and you haven't set anything aside for taxes yet. When your pay changes every month, a traditional monthly budget falls apart the moment a payment is late or smaller than expected. The real question is simple: how much can I actually spend right now? This guide shows a simple way to budget for irregular income, walks through an example, and shows how the Variable Income Budget App does the math for you.
The app was made by an accountant with 15+ years in bank reconciliations. It's a real app that opens in your web browser on a computer or phone, not an Excel or Google Sheets template.
Quick answer
To budget for irregular income, start from your checking balance and subtract everything that must be covered before your next deposit: unpaid bills, debt minimums, savings for upcoming costs, tax still to set aside and a buffer. What is left is your safe-to-spend number. Divide it by the days until your next deposit for a daily amount.
Why monthly budgets break with variable income
A monthly budget assumes the same paycheck arrives on the same day. With variable income, the timing and the amount both move. Plan on a good month and a slow month leaves you short. Plan on nothing and you never feel free to spend.
A better approach is to budget from deposit to deposit, and to treat your lowest month as your salary.
The safe-to-spend formula
Here is how the Variable Income Budget App builds its number:
Safe to spend = checking balance
- minus unpaid bills due on or before the next expected deposit
- minus debt minimums
- minus sinking-fund reserves for this stretch
- minus tax still to move this quarter
- minus the buffer you chose
Daily safe is that result divided by the days left until the next deposit.
Example: a freelance designer
A freelance designer has $2,400 in checking and expects the next client payment in 10 days.
| Before the next deposit | Amount |
|---|---|
| Checking balance | $2,400 |
| Less: rent due | −$1,100 |
| Less: phone bill due | −$65 |
| Less: credit card minimum | −$150 |
| Less: car insurance fund for this stretch | −$100 |
| Less: tax still to move this quarter | −$300 |
| Less: buffer | −$200 |
| Safe to spend | $485 |
| Daily safe (÷ 10 days) | $48.50 |
That $2,400 is really $485 you can spend freely, about $48.50 a day. Now "Can I afford this?" takes seconds to answer. Your starting number is only as good as your checking balance, so it helps to reconcile your checking account monthly. If you are lining up a payoff plan next to those debt minimums, the Debt Payoff Spreadsheet shows snowball and avalanche side by side.
You can do this on paper. The app keeps it updated every time you log money in or out, so the number is always current. Get the Variable Income Budget App for $14.99
Use an income floor as your salary
Your income floor is your lowest logged month. Budget as if that is your salary. When a bigger month arrives, the surplus refills your buffer instead of disappearing. Over time, this evens out the highs and lows.
Set aside tax from every payment
If you are self-employed, part of each payment is not yours to spend. The app has a tax set-aside built in, so you can see how much of each payment to move for taxes and track what you have already moved. It starts at 27%. A 25 to 30% set-aside is a common U.S. starting point for self-employment tax plus income tax, and your rate can differ. This is not tax, legal or financial advice.
What the Variable Income Budget App does
- Today: your safe-to-spend number, daily amount and bills due before you get paid
- Monthly picture: what came in, what went out and what you kept
- Income: log deposits and expected payments
- Spending and bills: log spending and mark bills paid
- Debts: snowball or avalanche payoff order
- Funds: save ahead for car insurance, holidays and other bills that sneak up
- Tax: set your rate and track what you have moved
- Print: a one-page summary
Getting started takes three numbers
- Open the file in Chrome, Edge, Safari or Firefox, on a computer or a phone. There's no app store download.
- Enter your checking balance, your next expected payment and your tax rate.
- Add your bills, then check your safe-to-spend number any time.
Want to look around first? Go to Settings and choose Load example to explore a built-in example budget, then clear it and enter your own numbers.
Private by design
Everything stays in your browser on your device. Nothing is uploaded, and there is no login, no account and no subscription. Because clearing your browser history can clear the app, use Export backup in Settings to save a copy somewhere safe. You can import that backup on another computer.
Buy once, with no monthly fee.
Who it's for
Anyone whose pay changes month to month: freelancers, gig workers, creators, commission and tip earners and seasonal workers. It's designed for personal use. Looking for a monthly household budget instead? See our household budget tools or all our apps.
FAQ
What is a variable income budget?
A budget built around deposits that change in size and timing. Instead of a fixed monthly plan, you focus on what is safe to spend until your next deposit.
Is this a spreadsheet?
No. It is a real app in one file that opens in your web browser.
Does it work on my phone?
Yes. It works in a phone or computer browser (Chrome, Edge, Safari or Firefox). No app store download is needed.
Does it connect to my bank?
No. You enter your balance and log income and spending yourself. Your data stays on your device.
Is there a subscription?
No. Buy once and keep it.
Spend with confidence, even when pay changes
Irregular income does not have to mean guessing. With one clear safe-to-spend number, tax set aside and a buffer in place, you can plan with confidence and trust your numbers.
Get the Variable Income Budget App for $14.99 · See all tools at ReconciledBooksCo