Tax guides

Clear, practical guides to UK tax, pay and personal finance — each one links to the calculators that do the maths for you.

Business Finance

How to Pay Corporation Tax: Deadline, Reference and Methods

HMRC never bills you for corporation tax. The 9-months-and-1-day deadline, the 17-character reference, payment methods ranked by speed and the rates.

Laura Michelle Davis · 24 Jul 2026
Taxes

Inheritance Tax When the Second Parent Dies: The £1m Rule

The second death is when IHT really gets calculated. How both parents' nil-rate bands combine to £1 million, with worked examples and executor steps.

Laura Michelle Davis · 24 Jul 2026
autumn-budget-2026-predictions
Taxes

Autumn Budget 2026: Predictions, Likely Tax Rises and What to Expect

The Autumn Budget 2026 is expected in late October or November 2026, the first under Prime Minister Andy Burnham. With frozen thresholds already raising tax by stealth, the most likely moves are further freezes, higher taxes on dividends, savings and property income, and tighter pension and ISA rules. Here is what is being predicted and how to prepare.

Laura Michelle Davis · 22 Jul 2026
premium-bonds-vs-savings-2026
Savings & ISAs

Premium Bonds vs Savings 2026: Which Wins After Tax?

For most people, a competitive savings account beats Premium Bonds on expected return, because the average Premium Bond prize rate is roughly what a good easy-access account already pays — before tax. Premium Bonds win in two cases: you have used up your Personal Savings Allowance and would be taxed on interest, or you value tax-free prizes and the chance of a big win over a steady return.

Laura Michelle Davis · 18 Jul 2026
PIP Rates and Eligibility 2026/27: Who Qualifies and How Much
Benefits

PIP Rates and Eligibility 2026/27: Who Qualifies and How Much

Personal Independence Payment (PIP) has two parts — daily living and mobility — each paid at a standard or enhanced weekly rate, and it is tax-free and not means-tested. You may qualify if a long-term physical or mental health condition affects daily tasks or getting around, based on a points assessment rather than your diagnosis or income.

Laura Michelle Davis · 15 Jul 2026
Cash ISA Limit Cut to £12,000 from April 2027: What It Means for You
Savings & ISAs

Cash ISA Limit Cut to £12,000 from April 2027: What It Means for You

From April 2027 the amount you can put into a cash ISA each year falls to £12,000 for those under 65, while the overall £20,000 ISA allowance stays the same — the remaining £8,000 must go into a stocks and shares ISA. If you rely on cash ISAs, the key move is to use your full £20,000 cash allowance in 2026/27 before the cut lands.

Laura Michelle Davis · 11 Jul 2026
p87-work-expense-claim-rules-2026
News

Claiming Tax Relief on Work Expenses: HMRC's Updated P87 Rules

HMRC has updated its P87 guidance and formal directions on what a job expenses claim must contain. Miss the employer PAYE reference, industry type or evidence and the claim is rejected outright. Here is what to include and what your claim is worth.

Laura Michelle Davis · 7 Jul 2026
Payrolling Benefits in Kind: What Changes from April 2027
Business Finance

Payrolling Benefits in Kind: What Changes from April 2027

HMRC has confirmed that company cars, fuel and medical benefits must be taxed through payroll from 6 April 2027, with most other benefits following in 2028. Here is the full timetable, what P11Ds survive, and what employers and employees should do now.

Laura Michelle Davis · 7 Jul 2026
HMRC Mileage Rate Rises to 55p a Mile, Backdated to 6 April 2026
News

HMRC Mileage Rate Rises to 55p a Mile, Backdated to 6 April 2026

The approved mileage rate for cars and vans rises from 45p to 55p per mile for the first 10,000 business miles, the first increase in 15 years. It applies for the whole 2026/27 tax year, so miles driven since 6 April already qualify.

Laura Michelle Davis · 7 Jul 2026

All guides

Browse every guide by topic.

Tax, explained without the jargon

UK tax has a reputation for being complicated, and the official guidance isn't always easy to follow. Our guides aim to fix that. Each one takes a single topic — how income tax bands work, what you can claim as a self-employed person, how stamp duty is calculated — and explains it in plain English, with worked examples and links to the calculators that do the maths for you.

The guides are written and reviewed by the TaxFly editorial team and updated when the rules change, so you're reading about the system as it works now, not several years ago. Wherever a guide mentions a figure you can apply to your own situation, you'll find a matching tool: pair our take-home pay guidance with the Take-Home Pay Calculator, or read up on dividends and then try the Dividend Tax Calculator.

Where to start

If you're employed, begin with the basics of income tax and National Insurance. If you work for yourself, the self-employment and Self Assessment guides will save you the most time. Buying or selling property? Start with stamp duty and capital gains. And if you just want the numbers, head straight to our full library of free UK calculators. Everything here is free to read, with no account required.

TaxFly guides are general information, not personal financial or tax advice. For decisions about your own circumstances, speak to a qualified accountant or adviser.

Official & accurate

Every figure follows HMRC 2026/27 rates and links to its gov.uk source.

Private & secure

Calculations run in your browser. Your figures are never stored or shared.

Free for everyone

No account, no paywall, no limits. All our tools are completely free.

This week in UK tax, every Friday

Rate changes, deadlines and HMRC rule updates that affect your money, in one short email.

One email every Friday. Unsubscribe any time.