UK Tax Year 2026/27: Personal Allowance Frozen, NI Unchanged, and the Real Take-Home Impact

The UK tax year rolled over on 6 April 2026, and for the sixth consecutive year the personal allowance stayed locked at £12,570. The higher-rate threshold remains £50,270, the additional-rate threshold £125,140, and Class 1 employee National Insurance sits at 8% on earnings between the primary threshold and upper earnings limit. Nothing headline-grabbing changed — and that is precisely the point. Six years of frozen thresholds against cumulative CPI of ~24% since April 2021 has quietly delivered one of the largest real-terms tax rises in modern British history.

What the Thresholds Look Like in 2026/27

• Personal allowance: £12,570 (frozen since April 2021, now extended to April 2028 under current legislation)
• Basic rate (20%): £12,571 – £50,270
• Higher rate (40%): £50,271 – £125,140
• Additional rate (45%): over £125,140
• Personal allowance taper: £1 withdrawn for every £2 earned above £100,000
• NI primary threshold: £12,570 (aligned with PA)
• NI upper earnings limit: £50,270
• Employee NI: 8% between thresholds, 2% above UEL
• Employer NI: 15% above the £5,000 secondary threshold (this is the one that rose in April 2025)

Model your exact take-home using the Salary Calculator UK — plug in any gross figure and it will break out PAYE, NI, pension, and student loan deductions line by line.

The Fiscal Drag Maths

"Fiscal drag" is the polite name for what happens when inflation pushes wages up but tax thresholds do not move. The Institute for Fiscal Studies estimates that by April 2028 — the current end of the freeze — an additional 4.6 million workers will have been pulled into paying income tax, and 3.2 million more into the 40% band, relative to a counterfactual where thresholds had risen with CPI.

On a practical level, someone earning £55,000 today who would have been comfortably basic-rate in 2021 now pays 40% on £4,730 of their income — an extra £945/year they did not pay five years ago in real terms. Run your own gross-to-net through the Income Tax Calculator UK to see where you fall.

What Actually Changed on 6 April 2026

Three quieter changes did take effect this week:

1. Dividend allowance stays at £500. Down from £2,000 four years ago. For anyone drawing dividends from a personal company, the tax-free slice is now essentially symbolic.
2. Capital Gains Tax annual exempt amount: £3,000. Down from £12,300 in 2022/23. Any non-ISA share sale over £3K of gain is now taxable at 18% (basic) or 24% (higher).
3. High Income Child Benefit Charge threshold raised to £60,000 (with full claw-back by £80,000). This is the one genuinely generous change — and it reverses the prior £50K threshold that had been punishing families on middle incomes for a decade.

National Insurance: What Did Not Change

Employee Class 1 NI stays at 8%. Self-employed Class 4 NI sits at 6% on profits £12,570–£50,270 and 2% above. Class 2 flat-rate NI was abolished in April 2024 and has not returned. For employees, the combined marginal rate of income tax + NI in the basic band is 28%, and in the higher band is 42%. Compute the exact split using the National Insurance Calculator UK.

The 60% Effective Tax Trap — Still Live

For anyone earning between £100,000 and £125,140, the combination of 40% income tax plus the personal allowance taper plus 2% NI produces an effective marginal rate of 62%. Every £1,000 earned in that band returns just £380 in take-home. The mitigation playbook remains the same:

• Salary sacrifice into pension down to £100K — both you and your employer save NI.
• Bonus sacrifice if you are near the cliff.
• Gift Aid donations — the gross-up extends your basic-rate band and indirectly reclaims personal allowance.
• Electric vehicle salary sacrifice — 2% benefit-in-kind rate until April 2028.

Tax Code Mistakes to Check in April

HMRC rolls out new tax codes in late March/early April. Employers often miss the memo and carry forward last year's code on the April payroll, which can produce under- or over-deduction. Three common issues:

• Code still 1257L when it should have an adjustment for untaxed interest from 2024/25 savings.
• Code still including a BIK adjustment for a company car you returned last year.
• Code on "week 1/month 1" basis after a job change — stopping you claiming cumulative allowance.

Your payslip should show the code clearly; compare it against the HMRC personal tax account and use the UK Personal Allowance Calculator to check whether the deduction looks right for your income profile.

Real Take-Home on Common Salary Bands (2026/27)

• £30,000 gross: ~£25,085 net (~£2,090/month)
• £45,000 gross: ~£35,505 net (~£2,959/month)
• £60,000 gross: ~£45,093 net (~£3,758/month)
• £80,000 gross: ~£55,893 net (~£4,658/month)
• £120,000 gross: ~£77,093 net (~£6,424/month) — personal allowance mostly tapered

Student loan plans (1/2/4/5 and Postgraduate) shave an additional 9%/6% off income above their respective thresholds.

What to Do in Week One of the New Year

• Fund the ISA early — £20K allowance reset on 6 April.
• Make a pension top-up if you have unused allowance from 2023/24 (3-year carry-forward closes 5 April 2027).
• Confirm your tax code is 1257L unless you know of a reason otherwise.
• If you gave to charity in 2025/26 and did not enter Gift Aid on your Self Assessment, claim the higher-rate relief retrospectively.

Verdict: Threshold freezes are the stealth tax of the decade. Model your 2026/27 take-home with the Salary Calculator UK, make pension contributions count for real tax relief, and use the frozen-allowance environment as a nudge toward maximum ISA funding — the tax-free wrapper becomes more valuable every year thresholds stay locked.