Serenity Tax
2026/27 tax year · Classic layout

Know what you'll actually take home.

Pick how you're paid, enter your numbers, and see the bands fill up as you go — income tax, National Insurance, student loan, and what HMRC will actually bill you on account next year.

Your numbers

Rates shown are for the 2026/27 tax year. Personal Allowance tapering above £100,000 total income is not modelled.

Total annual liability£6,608.75
Take-home: £50,961.25Per month to set aside: £550.73
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Income tax£6,608.75
Class 1 (employee, on salary only)£0.00
Student loan£0.00
Total liability£6,608.75
Salary — tax bandsmarginal rate 0.00%
Personal Allowance£12,570£0 tax
Dividends — tax bandsmarginal rate 35.75%
Dividend allowance£500£0 tax
Basic rate (dividends)£37,200£3,999 tax
Higher rate (dividends)£7,300£2,610 tax

Payments on account

Based on this year's figures, next year's payments on account would each be half of your dividend tax — none of your student loan or PAYE-collected tax counts toward this.

1st payment on account — due 31 Jan£3,304.38
2nd payment on account — due 31 Jul£3,304.38

18-month cash-flow timeline

First year owing Self Assessment tax over £1,000? Because there's no payment-on-account history yet, HMRC asks for this year's full tax bill and next year's first payment on account, together, on the same 31 January — effectively 150% of your actual liability in one go. This catches a lot of newly self-employed people out; it's not a mistake or a double-charge, it's just two separate things landing on the same date.

Assumes last year's actual liability was £0.00 (enter your real figure on the left) and this year comes in at £6,608.75. HMRC always bases payments on account on the year before, so a bonus taken this year doesn't hit your cash flow until the balancing payment ~18 months later.

This year's 1st payment on account (based on last year) — due 31 Jan 2027£0.00
This year's 2nd payment on account (based on last year) — due 31 Jul 2027£0.00
Balancing payment (this year's actual vs. what was paid on account) — due 31 Jan 2028£6,608.75
Next year's 1st payment on account (based on this year) — due 31 Jan 2028£3,304.38
Total due 31 Jan 2028 (balancing payment + next year's 1st POA together)£9,913.13

Get the full report

Email yourself this breakdown as a plain-text summary — handy for sending to an accountant or keeping for your records. Free while this is in pilot; a small one-off charge may apply later.