Free tools
Accounting and tax calculators.
Ten free, ACCA-built calculators and tools, current to the 2026/27 UK tax year. Use them for quick estimates — and book a free consultation when you'd like a definitive answer.
Use these free UK accounting and tax calculators to sense-check common planning questions before you speak with an accountant. The tools cover VAT, Corporation Tax, dividends, Capital Gains Tax, Stamp Duty, National Insurance, IR35 and HMRC deadlines.
Each calculator is designed for quick estimates using current rates and plain-English assumptions. They are helpful for comparing scenarios, checking likely exposure and preparing better questions before a tax or bookkeeping review.
The figures are guidance only, not formal advice. For decisions involving filings, penalties, company structure, property disposals or director pay, Countify can review the full facts and confirm the right treatment.
VAT Calculator
Add, remove and reverse VAT at 20%, 5% or 0%. Includes the Flat Rate Scheme.
OpenCorporation Tax Estimator
Estimate CT600 with marginal relief between £50k and £250k profit.
OpenDividend Tax Calculator
Salary + dividends modelled for limited-company directors, with the £500 allowance.
OpenCapital Gains Tax Calculator
Residential vs other assets, £3,000 annual exempt amount, BADR included.
OpenStamp Duty & LBTT Calculator
SDLT, Scottish LBTT and Welsh LTT in one place. First-time buyer and ADS supported.
OpenSelf-Employed NI Calculator
Class 2 and Class 4 NI for sole traders. 6% / 2% bands handled automatically.
OpenIR35 Inside vs Outside Calculator
Inside vs outside IR35 take-home for limited-company contractors.
OpenR&D Tax Credit Estimator
Merged scheme (20% RDEC) and ERIS for loss-making R&D-intensive SMEs.
OpenTax Deadline Checker
Self-Assessment, VAT, CT600, P11D and Confirmation Statement — late-filing exposure.
OpenClearance Letter Generator
Tell us once. We auto-draft your professional clearance letter and start the handover today.
OpenSalary Take-Home Calculator
Net pay after Income Tax, NI, pension and student loan. Scottish rates supported.
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