About Toolvan

Last reviewed: 2 October 2026

Who's behind this

I'm Jack Dev, a software developer, and I build and maintain Toolvan myself — it's not a product of a large company or a finance firm, just one person's side project that grew into a full set of calculators. I'm not a tax adviser or an accountant; what I bring is the engineering side — building something fast, clear and free to use — while the actual tax rules come straight from published government sources, described below.

I started Toolvan because the UK tax calculators I kept landing on were cluttered with ads, slow to load, or quietly running on last year's rates. I wanted something that gave a straight answer — your take-home pay, your tax band, your Stamp Duty bill — without a wall of pop-ups or a signup form in the way. That's still the goal: no account, nothing you type is sent anywhere, just a number you can trust.

Where our figures come from

Every rate, band and threshold used in our calculators is taken from published UK government sources — mainly GOV.UK and HMRC guidance, plus the Scottish Government's published Budget for the Scottish Income Tax bands. I don't estimate or guess a figure: when a Budget, Autumn Statement or Scottish Budget changes a threshold, I check it directly against the GOV.UK or HMRC page for that tax, update every calculator that uses it, and re-run the worked examples on the site to make sure they still match. Each tool links out to its relevant GOV.UK page so you can check the source yourself.

How we keep things current

All calculators on this site are currently built around 2026/27 tax year rates. When HMRC publishes new thresholds, we review and update the relevant tool. This About page's “last reviewed” date reflects the most recent full pass over the site's figures.

What our calculators are — and aren't

They give a general estimate for a standard tax code and straightforward circumstances
They run entirely in your browser — nothing you type is sent to us or stored
They are not financial, tax or legal advice, and can't account for every personal circumstance
For anything that affects a real financial decision, always check with HMRC or a qualified adviser

See our Terms of Use for the full picture.

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