Free UK calculator suite · 2025-26 rates
Free UK tax calculators — like having a CA in the room.
All UK 2025-26 rates. No signup. Free forever. Want to save your numbers for next year? Create a free account.
- 15 calculators
- · Shareable links
- · Print-friendly
- · No tracking
Director / Limited
Salary vs Dividend
Director extracting cash from a Ltd? Find the optimal split.
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Corporation Tax
19% / 25% with marginal relief between £50k and £250k.
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AIA / Equipment
Buy a van or kit pre-year-end? See the corp-tax saving instantly.
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Director loan (S455)
Loan still outstanding 9 months after year-end? See the 33.75% S455 hit.
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Sole trader / Personal
Pricing & cashflow
VAT
Add or strip VAT — 20%, 5% or 0%. Net + VAT + gross.
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Pricing
Cost + the margin you want → the right sell price (incl. VAT).
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Markup ↔ Margin
Cost + sell → markup %, margin %, profit £. The two-second sanity check.
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Break-even
Fixed costs ÷ contribution per unit → units to break even.
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Loan repayment
Principal + APR + months → monthly payment + total interest.
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Why these calculators?
Built by the same engine that powers BahiKhata's accountancy platform.
The maths here is the maths a senior CA reaches for daily — PAYE bands, NI categories, VAT 20/5/0, corporation tax with marginal relief, dividend allowance, AIA, BADR, S455, statutory redundancy, SMP/SPP. Every formula is the same code we use to file real returns inside BahiKhata, just exposed without a login.
- UK 2025-26 rates baked into the source
- Pence-integer arithmetic — no float drift
- Personal allowance taper, marginal relief, dividend bands all wired
- Each result includes the working, not just the answer
One bank statement away from never doing this by hand again.
BahiKhata is the platform behind these calculators. Drop in a CSV, and the same engine does your VAT 9-box, payroll, year-end pack and HMRC letters — in plain English.