How Much Tax Do I Pay in the UK? (2026 Guide)

UK tax can feel confusing, but once you break it down, it’s actually very straightforward. Whether you’re employed, self-employed, or running a side hustle, this guide explains exactly how much tax you pay — and how to estimate your take-home pay.

We’ll cover income tax, National Insurance, self-employed tax, and the £1,000 Trading Allowance.

1. UK Income Tax Bands (2026)

Income tax in the UK is based on bands. You only pay the higher rate on the portion of income that falls into that band.

Band	Income Range	Tax Rate
Personal Allowance	£0 – £12,570	0%
Basic Rate	£12,571 – £50,270	20%
Higher Rate	£50,271 – £125,140	40%
Additional Rate	£125,141+	45%

Important: Your Personal Allowance reduces once your income exceeds £100,000.

2. National Insurance (NI) Explained

National Insurance is separate from income tax. It funds state benefits like the State Pension.

Employees (PAYE)

Band	Income Range	NI Rate
Primary Threshold	£0 – £12,570	0%
Main Rate	£12,571 – £50,270	10%
Upper Rate	£50,271+	2%

Self-Employed (Class 2 & Class 4)

Class 2: £3.45 per week (if profits exceed £12,570)
Class 4: 9% on profits £12,571–£50,270, then 2% above £50,270

3. How to Estimate Your Take-Home Pay

A quick way to estimate your take-home pay:

Subtract your Personal Allowance (£12,570)
Apply the income tax bands
Apply National Insurance

For a more detailed breakdown, try the calculators on: tools.howardshelp.co.uk

4. Side Hustle Tax: What You Need to Know

If you run a side hustle, the rules are simple:

You can earn up to £1,000 tax-free under the Trading Allowance.
If you earn more, you must register as self-employed.
You pay tax on profit, not revenue.
You file a Self Assessment once a year.

Save time on admin:
Use Howard’s AI Prompt Starter Pack to generate invoices, customer messages, and marketing content instantly.

Buy Howard’s AI Prompt Starter Pack

5. Common UK Tax Mistakes to Avoid

Forgetting to track expenses
Not saving enough for tax
Missing the Self Assessment deadline
Mixing personal and business money
Not claiming allowable expenses

6. When You Need to Register as Self-Employed

You must register if:

Your side hustle profit exceeds £1,000
You want to claim expenses
You run a business regularly with the intention of making profit

You can register on GOV.UK — it takes about 10 minutes.

Final Thoughts

UK tax can look intimidating, but once you understand the bands and thresholds, it becomes much easier to manage. Whether you’re employed, self-employed, or running a side hustle, the key is to stay organised and plan ahead.

Next steps: