Payments on account for UK tattoo artists

The January Self Assessment bill is the single biggest financial event of the year for most self-employed UK tattoo artists, and it catches a worrying proportion of first-year filers unprepared. The structure isn't complicated, but the cash-flow impact is unforgiving, especially because January is typically the quietest month for bookings. This guide describes how payments on account work, when they bite, and how to manage them.

What payments on account actually are

Under s.59A of the Taxes Management Act 1970, payments on account are advance payments toward next year's tax bill, based on this year's. They are not extra tax, not a double bill, not a punishment for being self-employed, they're HMRC asking you to pay your tax in installments rather than in a lump 9 months after the tax year ends.

Two equal installments:

31 January, first payment on account for the next tax year, equal to 50% of this year's bill.
31 July, second payment on account, also 50%.

They're calculated from the previous year's Income Tax + Class 4 NIC liability (not VAT, not Class 2). At year-end, the actual liability is calculated, and:

If actuals are higher than the payments on account, you pay a balancing payment at the next 31 January.
If actuals are lower, the difference is credited back or applied to the next year's payments on account.

When payments on account apply

You make payments on account if both of:

Your previous year's Self Assessment bill was over £1,000, AND
Less than 80% of your tax for that year was collected at source (e.g. through PAYE on a salary).

Most full-time self-employed tattoo artists meet both conditions from year one of profitable trading.

You don't make payments on account if:

Last year's bill was £1,000 or less.
More than 80% of your income tax was already collected through PAYE (e.g. you have a day job and tattoo on the side at low income).
Your previous SA showed nil or tax credit.

The January spike, why it hits so hard

This is the worst-case cash-flow pattern. Imagine you started trading in July 2025 (the 2025-26 tax year). Your first Self Assessment bill is due 31 January 2027 and looks like this:

Balancing payment for 2025-26: full year's Income Tax + Class 4 NIC for 2025-26, e.g. £6,000.
First payment on account for 2026-27: 50% of that £6,000 = £3,000.
Total due 31 January 2027: £9,000.

Then on 31 July 2027, a second payment on account of £3,000 for 2026-27.

For year 2 of trading (2026-27 finalised in January 2028), assuming similar profits, the pattern is:

January 2028: balancing payment (small or zero) + first payment on account for 2027-28 (~£3,000).
July 2028: second payment on account ~£3,000.

So the first-ever Self Assessment liability is 1.5 times the simple annual tax because you're paying year 1's bill in full PLUS half of year 2's. This is the killer for first-year filers who didn't reserve enough.

January is also typically the quietest tattoo month, post-Christmas spending dip, weather, dark afternoons, January self-improvement resolutions that aren't "get a tattoo." So you're paying the biggest bill of the year in the worst cash-flow month.

The realistic tax reserve

The first six months checklist recommends putting aside 25-30% of net profit into a separate savings account.

The maths for a typical full-time artist (2025-26 rates):

Profit £30,000.
Personal Allowance £12,570 → £17,430 taxable.
Income Tax: £17,430 × 20% = £3,486.
Class 4 NIC: (£30,000 - £12,570) × 6% = £1,046.
Total: £4,532.
That's 15% of profit.

But in year 1, you also pay the first payment on account, which adds another £2,266 (50% of last year's bill). Total cash out: £6,798: 22.7% of profit.

For year 2 onwards, the payments on account roll-forward smooths things out, and the cash bill at January = balancing + 50% of next year ≈ 18-22% of last year's profit, roughly.

A 25% reserve covers most situations comfortably. 30% is safer for higher-rate years.

For profit above £50,270 (higher rate kicks in at 40% Income Tax + 2% Class 4 NIC = 42% combined), the reserve needs to rise, closer to 35-40% of the portion above the higher rate threshold.

Reducing payments on account when income drops

If you expect this year's tax bill to be lower than last year's (busy year followed by quieter year, taking a sabbatical, switching to part-time, taking on a salaried role), you can apply to reduce your payments on account.

The mechanism is form SA303 (or the online "Reduce my payments on account" route on your HMRC account):

Calculate your expected income for the current year.
Calculate expected Income Tax + Class 4 NIC.
Submit a reduction claim before the payment due date.
HMRC reduces the payment to your claimed figure.

Important: this is your claim, your responsibility. If you reduce too aggressively and the year ends up similar to last year, the underpayment plus interest hits you at the next 31 January. HMRC charges interest on underpaid payments on account from the original due date.

Use the reduction route conservatively. A common pattern: claim a reduction equal to 80% of the original payments-on-account amount if you genuinely expect a drop, leaving headroom for variance.

Forecasting your January bill

Through the year:

Track your year-to-date profit (income minus allowable expenses).
Project end-of-year profit based on current pace + planned seasonality.
Apply 2025-26 rates (Income Tax + Class 4 NIC).
Add the second payment on account for the prior year (due 31 July).
Set aside the reserve weekly or monthly.

Software like FreeAgent and Xero do this projection automatically once your transactions are coded properly.

What goes wrong

Most January cash crises are:

Spent the tax money. Saw it sitting in the account, treated it as available, didn't ring-fence into a separate savings account.
Underestimated profit. Late-year boost in bookings pushed the bill higher than the reserve covered.
Forgot the payment on account. Year-1 filers often plan for the balancing payment only and get blindsided by the 50% advance.
Higher rate crept in. Crossing the £50,270 threshold means the marginal tax rate jumps from 26% to 42%, but a flat 25% reserve won't capture that.
Class 2 NIC reform confusion. Pre-2024-25 the Class 2 NIC was a small but separate quarterly bill. From 2024-25 the rules changed, most artists no longer pay Class 2 NIC (or only voluntarily) but the simplification confused some.

The "Time to Pay" arrangement

If you cannot pay your January bill in full, HMRC's Time to Pay facility allows you to spread the payment over a longer period (typically up to 12 months) in monthly installments. Apply before the deadline if you know you can't pay in full, much better outcome than missing the date.

Conditions:

You must have filed your Self Assessment return.
You must owe less than £30,000 (above this, HMRC may still agree but on case-by-case basis).
You must not have other tax debts in default.
Interest accrues on the unpaid balance.

This is a workable backstop, but it's not a substitute for reserving in the first place, it's a way to manage a one-off cash crisis, not an ongoing strategy.

What this guide cannot do

Tax rates change. The interaction with PAYE income (if you have a day job alongside tattooing) gets complex.

Information, not advice. For your situation, work with an accountant especially in year 1, set up a separate savings account for tax reserve from your first payment, and read the HMRC payments on account guidance carefully before reducing.