Calculator Direct

Financial Calculators

Mortgage, loan, investment and compound interest calculators

Complete Financial Planning Calculator Suite

Professional financial planning tools with 10+ calculators for mortgages, investments, retirement, loans, and tax optimization

Mortgage Calculator

Estimate monthly repayments on a UK repayment mortgage from price, deposit, rate and term

How to use: Enter the property price and your deposit in pounds. The calculator shows your loan-to-value (LTV) as the amount borrowed divided by the price. Enter the annual interest rate from a lender's mortgage illustration, or one you want to test, and choose the term (25 years is the default). A longer term lowers the monthly payment but costs more interest overall. The estimate is for a capital repayment mortgage at one constant rate, so it excludes Stamp Duty, fees, insurance and any change of rate after a fixed or tracker deal ends. Work out the tax on your purchase with the Stamp Duty Calculator.

Professional Financial Planning Tools

Our comprehensive financial calculator suite provides accurate, professional-grade tools for mortgage planning, investment analysis, retirement planning, loan calculations, and tax estimation. All calculations follow established financial formulas and industry best practices.

Mortgage & Home Financing

  • • Monthly repayment calculations in £
  • • Deposit impact analysis
  • • Interest rate comparison tools
  • • Loan term optimization
  • • Refinancing break-even analysis

Investment & Growth Planning

  • • Compound interest calculations
  • • Portfolio growth projections
  • • Monthly contribution planning
  • • Risk-adjusted return analysis
  • • Regular monthly investing effects

Retirement Planning

  • • Workplace pension, SIPP and ISA growth projections
  • • Inflation-adjusted pot projection
  • • State Pension not included (check GOV.UK)
  • • Illustrative growth assumption you can change
  • • Pension tax relief basics explained

Loan & Payment Analysis

  • • Personal loan payment calculations
  • • Auto financing comparisons
  • • Loan repayment planning
  • • Debt consolidation analysis
  • • Early payoff strategies

Tax Planning & Optimization

  • • Income tax estimation
  • • International tax estimation
  • • Allowances and tax band basics
  • • Take-home pay planning
  • • Tax-efficient investment strategies

Advanced Financial Tools

  • • Amortization schedule analysis
  • • Inflation impact calculations
  • • Present value analysis
  • • Future value projections
  • • Break-even point analysis

How to Use Financial Calculators Effectively

Accurate Input Data

Use current market rates, actual loan terms, and realistic assumptions. For mortgage calculations, include buildings insurance and any fees. Investment projections should use conservative return estimates based on historical averages.

Professional Consultation

These calculators provide estimates for planning purposes. Always consult with qualified financial advisors, tax professionals, or mortgage specialists for personalized advice and final decision-making on significant financial matters.

Scenario Planning

Test multiple scenarios with different interest rates, terms, and amounts. Consider best-case, worst-case, and most-likely scenarios to make informed financial decisions with proper risk assessment.

Regular Updates

Revisit calculations regularly as market conditions, interest rates, and personal circumstances change. Annual reviews help ensure your financial strategies remain aligned with your goals and market realities.

Financial Planning Made Simple

Whether you're buying your first home, planning for retirement, or comparing loan options, our financial calculators provide the insights you need to make confident financial decisions. All tools are free, require no registration, and deliver professional-grade accuracy.