UK TAX CALCULATORS 2025

Advanced UK Tax Calculators

Filter by category and open any calculator. All tools are built for fast 2025/26 tax planning and quick scenario testing.

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How to use the TaxYZ calculator hub

This hub groups the full TaxYZ calculator set by topic so users can move from a quick tax question to a deeper planning workflow without hunting across the site. It works best when you start with the calculator closest to your core question, such as salary, self-employment, property, pensions, or student loans, and then open the related tools shown on each page when you need to test a connected scenario.

Most calculators use annual figures and current-year assumptions, so check the tax year first and then enter gross values unless a field explicitly asks for percentages, monthly numbers, or plan selections. If you are comparing outcomes across employment income, pension contributions, dividend income, or household reliefs, use the hub to move between tools rather than forcing one calculator to answer every question.

The goal of this page is speed and direction. It helps you find the right calculator quickly, understand what kind of inputs each tool expects, and narrow down which thresholds matter before you validate final numbers against official records, payroll documents, or adviser-reviewed calculations.

Showing 30 calculators

Salary After Tax Calculator

Estimate net salary after tax, NI, pension and student loan.

Income TaxOpen ->

Take-Home Pay Calculator

See annual, monthly and weekly take-home pay.

Income TaxOpen ->

Net to Gross Salary Calculator

Reverse-calculate gross salary from target net pay.

Income TaxOpen ->

Hourly to Salary Calculator

Convert hourly pay into annual salary and tax context.

Income TaxOpen ->

Bonus Tax Calculator

Estimate income tax and NI impact of a bonus payment.

Income TaxOpen ->

Overtime Tax Calculator

See extra take-home pay from overtime earnings.

Income TaxOpen ->

Scotland Income Tax Calculator

Model Scottish income tax bands with UK NI deductions.

Income TaxOpen ->

Marriage Allowance Calculator

Check eligibility and estimate transferable allowance savings.

Income TaxOpen ->

Child Benefit Tax Calculator

Estimate High Income Child Benefit Charge quickly.

Income TaxOpen ->

National Insurance Calculator

Calculate employee and self-employed NI quickly.

National InsuranceOpen ->

Class 4 NI Calculator

Estimate self-employed Class 4 NI contributions.

National InsuranceOpen ->

Class 2 NI Calculator

Check Class 2 NI status and voluntary scenarios.

National InsuranceOpen ->

Employer NI Calculator

Estimate employer contribution cost per salary level.

National InsuranceOpen ->

Self-Employed Tax Calculator

Calculate sole-trader income tax and NI combined.

Self-EmployedOpen ->

Freelancer Tax Calculator

Estimate annual tax for freelance income streams.

Self-EmployedOpen ->

Contractor Tax Calculator

Compare inside and outside IR35 outcomes.

Self-EmployedOpen ->

Limited Company Tax Calculator

Estimate corporation tax and distributable profits.

Self-EmployedOpen ->

Second Home Stamp Duty Calculator

Estimate SDLT for second property purchases.

PropertyOpen ->

Property CGT Calculator

Estimate capital gains tax on property disposals.

PropertyOpen ->

Buy-to-Let Tax Calculator

Model tax position for buy-to-let income.

PropertyOpen ->

Rental Income Tax Calculator

Estimate tax due on residential rental profits.

PropertyOpen ->

Pension Contribution Calculator

Calculate pension relief and effective net cost.

PensionsOpen ->

Pension Lump Sum Tax Calculator

Model tax-free and taxable pension withdrawals.

PensionsOpen ->

State Pension Tax Calculator

Estimate retirement tax on state and private pension.

PensionsOpen ->

Student Loan Repayment Calculator

Estimate deductions by student loan plan and salary.

Student LoansOpen ->

Student Loan Plan Comparison

Compare repayment impact across all plan types.

Student LoansOpen ->

ISA Tax Savings Calculator

Estimate tax saved by sheltering returns inside ISA.

Savings & InvestmentOpen ->

Dividend Tax Calculator

Estimate dividend tax based on total taxable income.

Savings & InvestmentOpen ->

Compound Interest Calculator

Project savings growth with regular contributions.

Savings & InvestmentOpen ->

Inheritance Tax Calculator

Estimate taxable estate and inheritance tax exposure.

Savings & InvestmentOpen ->
FREQUENTLY ASKED QUESTIONS

Advanced UK Tax Calculators Questions

Common questions about the calculation, the inputs, and how to use the result.

Start with the income source or tax event you are actually dealing with. Salary, self-employment, property income, pensions, student loans, and family tax planning all have different rules and thresholds. The hub is designed so you can open the closest match first, then move to related calculators if a second issue, such as pension relief or Child Benefit tax, also affects the result.
Annual figures are the safest default because most UK tax thresholds are defined on an annual basis. That includes the £12,570 personal allowance, the £50,270 higher-rate threshold, most student loan thresholds, and many benefit-related limits. Only use monthly, weekly, or percentage inputs when the field label explicitly asks for them.
No. The calculators are standalone planning tools built to help you understand how UK tax rules usually behave. They are useful for estimates, comparisons, and threshold planning, but they do not read live HMRC data, payroll records, or personal tax accounts. Final liabilities can still differ because of tax codes, adjustments, and personal circumstances.
Open the main calculator for your question, enter a clean baseline using annual figures, and then test one change at a time. For example, you might compare a higher pension contribution, a different student loan plan, or a second property purchase. Keeping each change isolated makes it easier to see what actually drives the tax result instead of changing multiple variables at once.
If you start with salary after tax or take-home pay, the next useful pages are usually National Insurance, pension contribution, bonus tax, overtime tax, student loan repayment, and child benefit tax. Those pages help you test the deductions, household thresholds, and planning choices that most often sit behind a changed take-home pay number.