UK Tax Calculation Tools • Personal, Property and Business Tax
Tax Calculators
Use our UK tax calculators to estimate Income Tax, Self Assessment tax, Capital Gains Tax, landlord tax, dividend tax, Corporation Tax, VAT, payroll deductions and HMRC penalties. These tools are for Cambridge individuals, landlords, company directors and businesses who want a preliminary calculation before filing, planning or asking for a technical review.
UK tax calculation tools
Tax Calculators for Individuals, Landlords and Businesses
These calculators give a quick estimate of common UK tax figures. They may help where income comes from employment, consultancy work, academic work, rental property, dividends, capital gains, company profits, VATable supplies or payroll.
They should not be treated as final tax advice. Tax depends on the tax year, allowances, reliefs, residence status, income sources, ownership structure and HMRC filing rules. Where a Cambridge client has foreign income, company shares, an HMO, research income, share options or an HMRC letter, the calculation normally needs proper review before it is used.
Important calculator disclaimer
- Calculator results are estimates only
- Tax rates and allowances depend on the tax year
- Reliefs and exemptions may change the result
- HMRC filing rules may still apply even if no tax is due
- Complex cases should be reviewed before submission
- Use our quote page separately for service fees
Personal tax calculators
Personal Tax Calculators
Use these calculators to estimate personal tax, Self Assessment tax and payments due to HMRC.
Income Tax Calculator
Estimate Income Tax based on taxable income, allowances and tax bands. Useful for employees, pensioners, directors and individuals with more than one income source.
- Employment income
- Pension income
- Taxable income estimate
- Income Tax band calculation
Self Assessment Tax Calculator
Estimate a Self Assessment position by combining income, expenses, allowances and tax already deducted.
- Employment and self-employment income
- Property income
- Dividends and interest
- Estimated tax payable or refund
Payments on Account Calculator
Estimate HMRC payments on account based on your previous Self Assessment tax liability and balancing payment.
- 31 January payment estimate
- 31 July payment estimate
- Balancing payment guide
- Useful for cash-flow planning
Dividend Tax Calculator
Estimate tax on dividends after considering income level, dividend allowance and tax bands. Useful for company directors and shareholders.
- Dividend income estimate
- Director dividend planning
- Tax band calculation
- Personal tax estimate
Property tax calculators
Property and Capital Gains Tax Calculators
These calculators help landlords and property owners estimate rental profits, property tax and Capital Gains Tax. They can be useful where property income, mortgage interest, joint ownership or a sale needs to be reviewed.
Capital Gains Tax Calculator
Estimate Capital Gains Tax on property, shares or other assets based on disposal proceeds, purchase cost, improvement costs and available reliefs.
- Property disposal gains
- Asset sale gains
- Allowable costs
- Estimated CGT due
Rental Profit Tax Calculator
Estimate taxable rental profit after rental income, allowable property expenses and finance cost adjustments.
- Rental income
- Allowable expenses
- Mortgage interest adjustment
- Estimated taxable rental profit
Mortgage Interest Tax Relief Calculator
Estimate the effect of mortgage interest finance cost relief on your landlord tax calculation.
- Rental income estimate
- Mortgage interest restriction
- Basic rate tax credit guide
- Landlord tax planning
Non-Resident Landlord Tax Calculator
Estimate UK tax on rental income for non-resident landlords with UK property income.
- UK rental income
- Allowable property expenses
- Non-resident landlord tax estimate
- NRL scheme planning
Business tax calculators
Business and Company Tax Calculators
These calculators help directors, employers and business owners estimate company tax, VAT and payroll figures before the accounts, VAT return or payroll records are finalised.
Corporation Tax Calculator
Estimate Corporation Tax on company profits, including small company and main rate planning where relevant.
- Company profit estimate
- Corporation Tax calculation
- Director planning support
- CT600 preparation guide
Salary vs Dividend Calculator
Compare the tax effect of salary and dividends for company directors and owner-managed businesses.
- Salary planning
- Dividend tax estimate
- National Insurance guide
- Director profit extraction
VAT Calculator
Calculate VAT inclusive, VAT exclusive and VAT amount figures for invoices, purchases and pricing.
- Add VAT to net amount
- Remove VAT from gross amount
- Calculate VAT amount
- Useful for invoices and pricing
Payroll Tax Calculator
Estimate payroll deductions including PAYE tax, employee National Insurance and employer payroll costs.
- PAYE estimate
- Employee NI estimate
- Employer cost guide
- Monthly payroll planning
HMRC and penalty calculator
HMRC Payment and Penalty Calculator
Use this calculator to estimate possible late filing or late payment exposure before speaking to us.
HMRC Late Filing Penalty Calculator
Estimate potential HMRC late filing penalties and understand why late tax returns should be dealt with quickly. The final HMRC position depends on the tax involved, filing history, deadline and whether a reasonable excuse may apply.
- Late Self Assessment penalty guide
- Late filing exposure
- Payment deadline planning
- Appeal and reasonable excuse review
Calculators are a guide, not tax advice
Need Help Checking the Result?
Tax calculators are useful for a quick estimate, but they cannot replace a professional review. If the calculation involves foreign income, Capital Gains Tax, company tax, property tax, HMRC penalties, disclosures, residence issues or share-based employment income, the result should be reviewed before anything is filed with HMRC.
Speak to us if your calculation involves
- Foreign income or double tax relief
- Capital Gains Tax on property
- Undeclared income or tax disclosure
- HMRC compliance checks or penalties
- Company director salary, dividends or share options
- Landlord mortgage interest, HMOs and property expenses
Common questions
Tax Calculators FAQs
Are the calculator results final tax advice?
No. The calculators provide estimates only. The final tax position depends on the tax year, income sources, allowances, reliefs, residence status, records and HMRC rules.
Can I use the calculator result for my tax return?
You can use it as a guide, but you should not treat it as final without checking the figures. A tax return must be based on accurate records and the correct tax rules for the relevant year.
Will you have a separate quote calculator?
Yes. The calculators on this page are for tax calculations. The instant quote page is separate and is used to estimate our service fees.
Which calculator should landlords use?
Landlords may find the Rental Profit Tax Calculator, Mortgage Interest Tax Relief Calculator, Non-Resident Landlord Tax Calculator and Capital Gains Tax Calculator useful.
Which calculator should company directors use?
Company directors may find the Dividend Tax Calculator, Salary vs Dividend Calculator, Corporation Tax Calculator and Payroll Tax Calculator useful.
Can you check my calculator result?
Yes. If you are unsure whether the calculation is correct, you can contact us or book an appointment. We can review the figures before you file, disclose or respond to HMRC.
Need help with a tax calculation?
Ask Us to Review Your Figures
Use the form to tell us which tax calculation you need help with. We can review the figures, explain the tax position and help with filing where required.