About
About UK Money Tools
Free, accurate financial calculators and plain-English guides, built specifically for people in the UK who want to understand their money better.
Who's behind this?
Hi, I'm Tim, a software engineer based in the UK. I built UK Money Tools after getting frustrated trying to find accurate, no-nonsense financial calculators that actually reflected how the UK tax system works. Most of what I found was either out of date, overly simplified, or buried behind a sales pitch.
I've always enjoyed learning about personal finance and growing wealth, and I wanted a set of tools I could genuinely trust for my own planning. So I built them, and decided to share them for free.
Every calculator is written and maintained by me, based on the latest HMRC figures and legislation. If you spot an error or have a suggestion, I'd love to hear from you at [email protected].
What the site covers
UK Money Tools is a collection of financial calculators and guides designed to make UK personal finance clearer. The tools cover income tax, National Insurance, mortgages, stamp duty, ISAs, pensions, and more, all built around the actual rules and thresholds that apply in England, Wales, Scotland, and Northern Ireland.
Each calculator is paired with straightforward explanations so the results make sense even if you've never thought about the underlying maths. The guides go deeper, walking through the concepts behind the numbers in plain English, without the financial jargon.
Why I built it
Most people have a rough sense of their income and biggest expenses, but few have a genuinely clear picture of where they stand. A mortgage calculation done in your head is rarely accurate. A retirement projection that ignores compound interest is almost certainly too optimistic. A budget that only accounts for monthly expenses will always feel like it's leaking.
Good financial tools should close that gap. They should be fast, honest about their outputs, and clear enough that you don't need a financial background to understand the results. That's what I've tried to build.
Accuracy and updates
Every calculator uses current HMRC figures: tax bands, NI thresholds, ISA allowances, pension annual allowances, State Pension rates and more. I update the tools after every Budget or HMRC announcement that changes the underlying rates.
The tools reflect the 2026/27 tax year by default, with some calculators (such as Income Tax) allowing you to compare multiple years side by side.
Your privacy
All calculations happen entirely in your browser. Nothing you enter is sent to a server, stored anywhere, or shared with third parties. We don't require an account and we don't ask for your name, email address, or any personal information.
You can close the page and everything you've entered disappears. Read our Privacy Policy for the full details.
Get in touch
Have a question, spotted an error in a calculator, or want to suggest a new tool? I'd love to hear from you. Email me at [email protected].
Our sources
Every rate, threshold, and rule on this site is sourced from official UK government publications. The primary sources we use are:
- HMRC — tax bands, NI thresholds, ISA allowances, pension annual allowance, Capital Gains Tax rates, dividend allowance, and all other direct tax figures
- DWP (Department for Work and Pensions) — State Pension rates, qualifying year requirements, and auto-enrolment minimum contributions
- HM Treasury Budget documents — rate changes announced at the Autumn Statement or Spring Budget before they appear in HMRC's published tables
- Student Loans Company — repayment thresholds for Plans 1, 2, 4, and 5, and the Postgraduate Loan
- SDLT technical guidance (gov.uk) — Stamp Duty Land Tax rates, reliefs, and surcharges including first-time buyer relief and the additional-dwelling surcharge
What changed in 2026/27
Several important changes took effect for the 2026/27 tax year, and all calculators on this site reflect the updated figures:
- Employer NI at 15% — from April 2025, employer National Insurance rose from 13.8% to 15%, with the secondary threshold falling to £5,000. This increases the value of salary sacrifice arrangements for both employers and employees.
- State Pension at £11,973/year — the full new State Pension increased under the triple lock guarantee. The personal allowance remains frozen at £12,570, meaning the State Pension now exceeds it for those with the full NI record and no other adjustments.
- Stamp Duty thresholds reverted April 2025 — the temporary higher nil-rate thresholds introduced in September 2022 expired. The standard nil-rate band returned to £125,000; first-time buyer relief applies up to £300,000 (on properties up to £500,000).
- Capital Gains Tax rates aligned October 2024 — the rates on non-property assets (shares, funds) were increased to 18% (basic rate) and 24% (higher rate), aligning them with residential property rates.
- Pension IHT from April 2027 — unused defined contribution pension pots will form part of your estate for Inheritance Tax purposes from April 2027. Our Pension IHT calculator models the impact of this change.
Not financial advice
The calculators and guides on this site are for information and planning purposes only. They are not regulated financial advice. For decisions that significantly affect your finances (taking out a mortgage, choosing a pension provider, planning your estate), please consult a qualified financial adviser or contact HMRC directly.
See our full disclaimer for more detail.