How to budget when your income moves every month
If your income moves, a normal budget breaks. The method that works is to stop budgeting from what arrived and start paying yourself a salary.
Pay all income into a holding account, work out your average from twelve months, then transfer yourself a fixed salary below that average on the same date each month. Set aside 25% to 30% of profit for tax the day you are paid, and build six months of core costs rather than three.
Why a normal budget fails on irregular income
A standard budget assumes the same amount arrives every month. Freelancers, contractors, commission earners and zero hours workers do not have that.
The result is a good month feeling like a windfall and a bad month feeling like a crisis. Both are just variance around an average.
The fix is to stop budgeting from what arrived and start budgeting from what you pay yourself.
Pay yourself a salary
Work out your true monthly minimum
Rent, bills, food, travel, minimum debt payments. The number you must have.
Add up twelve months of income
Use last year if you have it. Divide by twelve to get your average.
Set a salary below the average
Somewhere between your minimum and your average. Deliberately conservative.
Pay everything into a holding account
All income lands there. Nothing is spent from it.
Transfer the salary on the same date each month
Your current account now behaves like an employee's.
Let the buffer build in good months
The surplus stays in the holding account. That is what funds the bad months.
Set the tax aside on the day
The single most common failure for self-employed people is spending money that was never theirs.
| Put aside | For | When it is due |
|---|---|---|
| 25% to 30% of profit | Income tax and National Insurance | 31 January, with a payment on account in July |
| The VAT you charged | VAT, if registered | Quarterly |
| Corporation tax if a company | Company profits | Nine months and one day after the end of the accounting period |
Percentages are a working guide, not a calculation. Your accountant gives you the real figure.
Move it to a separate account the day the invoice is paid. Money in the current account gets spent, whoever it belongs to.
Want this checked against your own situation?
Send us the figures and we will tell you what they mean. If it is not ours to advise on, we will say who should.
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We advise on and arrange life cover, critical illness cover and income protection ourselves. There is no fee to you for our advice. If you take out a policy, the insurer may pay us a commission.
A bigger buffer, for a reason
Employed people are told to hold three months of costs. If your income moves, six is the right target.
You have no sick pay, no redundancy pay and no notice period. A quiet quarter is not an emergency, it is a normal event you have to be able to absorb.
Income protection matters more here than for an employee, for exactly the same reason. It is one of the things we advise on and arrange ourselves.
Where you stand
- Freelancers and contractors
- Commission and tips-based earners
- Anyone on zero hours or variable shifts
- Company directors paying themselves irregularly
- You have under a year of trading history
- Your income is seasonal rather than random
- You are also drawing on benefits that vary
- Your business and personal money are not yet separate
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Questions people actually ask
How do I budget with an irregular income?
How much tax should I set aside as self-employed?
How big should my emergency fund be if I am self-employed?
What if I have no twelve month history?
Does irregular income stop me getting a mortgage?
How do I check broadband speed at a property?
Where to go next
Figures checked on 1 September 2026 and correct for the 2026/27 tax year. Rates change, so check the source before you act on a number.
No sick pay behind you?
Income protection is the cover self-employed people most often lack and most often need. We advise on and arrange it directly.
Start a conversationPrefer WhatsApp? Message us there. We are open Monday to Saturday, 9am to 8pm.
We advise on and arrange life cover, critical illness cover and income protection ourselves. There is no fee to you for our advice. If you take out a policy, the insurer may pay us a commission.