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.
Open
Corporation Tax Estimator
Estimate CT600 with marginal relief between £50k and £250k profit.
Open
Dividend Tax Calculator
Salary + dividends modelled for limited-company directors, with the £500 allowance.
Open
Capital Gains Tax Calculator
Residential vs other assets, £3,000 annual exempt amount, BADR included.
Open
Stamp Duty & LBTT Calculator
SDLT, Scottish LBTT and Welsh LTT in one place. First-time buyer and ADS supported.
Open
Self-Employed NI Calculator
Class 2 and Class 4 NI for sole traders. 6% / 2% bands handled automatically.
Open
IR35 Inside vs Outside Calculator
Inside vs outside IR35 take-home for limited-company contractors.
Open
Tax Deadline Checker
Self-Assessment, VAT, CT600, P11D and Confirmation Statement — late-filing exposure.
Open
Clearance Letter Generator
Tell us once. We auto-draft your professional clearance letter and start the handover today.
Open
Employer PAYE Calculator
True cost of employment: employer NI at 15%, auto-enrolment pension, monthly breakdown.
Open
Sole Trader vs Ltd Co Calculator
Side-by-side take-home comparison: sole trader vs Ltd Co salary + dividends.
Open
Rental Income Tax Calculator
Section 24 mortgage interest credit, allowable expenses, higher-rate landlord impact.
Open
VAT Threshold Checker
Rolling 12-month turnover vs £90k threshold. Cash-flow impact of registration modelled.
Open
Pension Tax Relief Calculator
Basic/higher/additional rate relief, annual allowance, carry-forward note. Scottish rates supported.
Open
HMRC Interest & Penalties Calculator
Daily interest at 7.75% p.a. plus fixed penalties for SA, CT, VAT and PAYE late payments.
Open
Scottish Income Tax Calculator
All six Scottish bands for 2026/27. Side-by-side comparison with rUK rates included.
Open
First-Year Checklist Generator
Personalised HMRC & Companies House deadline checklist for newly incorporated UK companies.
Open
LBTT Calculator
Scottish LBTT with first-time buyer relief and 8% ADS for additional dwellings.
Open
HMRC Enquiry Risk Checker
Score your HMRC enquiry risk based on sector, expenses, turnover pattern and filing history.
Open
Company Car Tax Calculator
P11D value × CO2 percentage = BIK charge. Electric cars at 5% for 2026/27.
Open
CIS Deduction Calculator
20%, 30% or 0% CIS deductions on subcontractor payments. Net payment and annual cost shown.
Open
Maternity Pay Calculator
SMP: 90% for 6 weeks then £187.18/week for 33 weeks. Employer recovery rate shown.
Open
Sick Pay Calculator
SSP at £116.75/week from day 4 of sickness. 28-week maximum period. Waiting days explained.
Open
R&D Tax Relief Estimator
Merged R&D scheme: 20% above-the-line credit on qualifying expenditure. Loss-making rate shown.
Open
AIA Checker
£1m AIA on plant and machinery. 18% Writing Down Allowance on the remainder.
Open
Dividend vs Salary Optimiser
Optimal salary + dividend split for Scottish Ltd Co directors. Scottish 42% higher rate changes the crossover vs rUK.
Open
Salary Take-Home Calculator
Net pay after Income Tax, NI, pension and student loan. Scottish rates supported.
OpenGet started
Take control of your
numbers today.
Free, no-obligation consultation. We agree the fee upfront — no surprises.
- Expert advice
- Fixed fees
- Fast response