£18,000 After Tax UK (2026/27) — Take-Home Pay Calculator

A £18,000 gross annual salary in the UK (2026/27 tax year, standard 1257L tax code, 0% baseline pension) gives you £16,479.60 net per year (£1,373.30 per month / £316.92 per week) after deducting £1,086.00 HMRC Income Tax and £434.40 Class 1 National Insurance. From your next £1,000 pay rise or bonus, you keep £720 after 28% marginal deductions.

Cash Waterfall: Where Your £18,000 Gross Salary Goes 91.6% Take-Home

91.6% Take-Home

Net Take-Home: £16,480 (91.6%)

HMRC Income Tax: £1,086 (6.0%)

Class 1 NI: £434 (2.4%)

2026/27 UK Payroll Line Item (1257L)	Annual Figure	Monthly Payslip Figure
Gross Salary	£18,000	£1,500.00
Tax-Free Personal Allowance	£12,570	£1,047.50
HMRC PAYE Income Tax	£1,086.00	£90.50
Class 1 National Insurance (Cat A)	£434.40	£36.20
Net Take-Home Pay (0% Baseline Pension)	£16,479.60	£1,373.30
Net Take-Home Pay (With 5% Workplace Pension)	£15,831.60	£1,319.30

Your Next £1,000 Pay Rise or Bonus (Marginal Rate Test)

At £18,000, your combined HMRC marginal deduction rate is 28%. From your next £1,000 gross pay rise or bonus, you keep £720 net and pay £280 in Income Tax & Class 1 National Insurance.

2026/27 UK Student Loan Repayment Matrix on £18,000

Student Loan Plan	2026/27 Threshold & Rate	Annual / Monthly Deduction
Plan 1 (Pre-2012 / NI)	£26,065 @ 9%	£0/yr (£0.00/mo)
Plan 2 (2012–2023 England/Wales)	£28,470 @ 9%	£0/yr (£0.00/mo)
Plan 4 (Scotland SAAS)	£32,745 @ 9%	£0/yr (£0.00/mo)
Plan 5 (2023+ England)	£25,000 @ 9%	£0/yr (£0.00/mo)
Postgraduate Loan	£21,000 @ 6%	£0/yr (£0.00/mo)

2026/27 UK Public Sector Pay Spine Comparison (NHS & Teachers)

Working in the NHS or Education? Compare £18,000 against statutory 2026/27 public sector pay bands and mandatory Net Pay pension tiers: NHS Agenda for Change (AfC) Pay & Pension Calculator (Bands 2–9) and Teachers' Pay Spine & TPS Pension Calculator (M1–M6 & U1–U3).

Looking Ahead: 2027/28 UK Tax Year Changes (From 6 April 2027)

Under HM Treasury's legislated fiscal drag schedule, the £12,570 Personal Allowance and £50,270 Higher Rate threshold remain frozen through 2027/28. From 6 April 2027, non-ISA savings interest and unincorporated landlord property income tax rates rise by +2 percentage points across all bands to 22% (Basic), 42% (Higher), and 47% (Additional), alongside a £12,000 annual Cash ISA cap for savers under age 65.

Frequently Asked Questions (2026/27 & 2027/28 UK Rules)

How much is £18,000 after tax per month in the UK?

On a £18,000 annual salary in 2026/27 (before optional workplace pension contributions), your net monthly take-home pay is £1,373.30 (£16,479.60 per year) after deducting £1,086.00 in HMRC Income Tax and £434.40 in Class 1 National Insurance. If you contribute 5% into a workplace pension (£900/yr), your net monthly take-home pay is £1,319.30.

How much of an extra £1,000 pay rise do I keep on a £18,000 salary?

At £18,000, your combined marginal tax and Class 1 National Insurance rate is 28%. From your next £1,000 gross pay rise or bonus, HMRC deducts £280 and you keep £720 net.

Authoritative UK Calculators & 2027/28 Early Access

NHS Pay & Pension Calculator (AfC 2026/27) · Teachers' Pay & TPS Pension Calculator · 60% Tax Trap & £100k Childcare Guide · Compare Two UK Job Offers · 2027/28 Savings Tax & £12k ISA Cap · 2027/28 Landlord Property Tax · 'Your First Home' Equity Loan · £1,000 Side-Hustle Tax Checker · National Living Wage (2026 vs 2027) · UK Mortgage LTV Calculator · UK Compound Savings Calculator