Can you pay your Self Assessment bill through your PAYE code?

1. The bill must be below £3,000

HMRC allows eligible Self Assessment liabilities to be collected through a PAYE code. The bill must be strictly below £3,000. A bill of exactly £3,000 fails this test, and making a part payment to bring a larger bill below the limit does not qualify it.

For example, an employee with a £2,400 bill may qualify, subject to the other checks. Someone with a £3,200 bill cannot secure this route simply by paying £300 first. These are illustrations, not client cases.

2. PAYE income must support the deductions

You must already pay tax through PAYE, such as on employment income or a company pension. HMRC must also have sufficient PAYE income from which to collect the liability. Collection is unavailable if it would take more than half your PAYE income in tax or make your tax deductions more than double their normal amount.

A small salary does not guarantee eligibility merely because you also receive dividends. Review the actual PAYE income and current deductions. Tell your adviser about a planned job change, retirement or reduced hours.

3. Online filing has an earlier deadline

HMRC requires an online return by 30 December, or a paper return by 31 October, for this collection route. For the 2025/26 return, plan around 30 December 2026 if filing online. Do not assume a return submitted in January will qualify.

Allow time to reconcile employment income, benefits, savings, dividends and reliefs before filing. Filing early does not mean accepting an incomplete calculation. Our return records checklist helps organise the information.

4. Check what HMRC will actually collect

HMRC normally arranges coding automatically where the conditions are met, unless you ask it not to on the return. Collection is spread across 12 months of salary or pension deductions alongside normal tax. For illustration, £2,400 spread evenly over 12 months is £200 a month in additional deductions.

Review HMRC correspondence, the revised coding notice and your Self Assessment account. Do not assume every balance on the account is covered, including any separate payments on account. Pay amounts outside the coding arrangement by their applicable deadlines. Current Class 2 National Insurance cannot be collected through this route.

Prepare a payment decision alongside the return

Give your adviser the draft calculation, current payslip or pension statement, tax code, expected PAYE income changes and Self Assessment statement. Compare the effect on monthly take-home pay with direct payment. PAYE coding is an eligibility-based collection method, not a general agreement to defer any tax debt.

We prepare personal tax returns for clients in London and across the UK, with fees from £400 and scope agreed upfront. See our personal tax service or Get in touch to arrange a quote. General guidance does not confirm your individual eligibility.

Official sources and further reading

These primary sources support the framework above. Check the current version before acting because tax law and HMRC guidance can change.

• GOV.UK: paying through your tax code