Formulas Validated For 2026

Tested Engine

Mortgages & Property Calculators

Accurate, instant, and transparent. 19 powerful mortgages & property tools built for specific United Kingdom rules.

Most Used Calculators

Shared Ownership

Project monthly share costs and unowned-rent for partial-property homeowners.

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Interest vs Repayment

Compare monthly costs between interest-only and full-repayment mortgage paths.

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Rental ROI UK

Evaluate the financial performance of UK rental properties with detailed net income and yield metrics.

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All Mortgages & Property Tools

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Property Tax UK

Calculate estimated taxes including Stamp Duty for UK house purchases.

Help to Buy UK

Project government bonuses and total capital for first-time buyers in the UK.

Deposit Calculator UK

Calculate how much you need to save to meet your specific UK house deposit goals.

Rent vs Buy UK

Comprehensive decision-making tool comparing long-term rental costs against ownership appreciation.

Property Investment

Project monthly cashflow and annual ROI for British real estate investments.

Rent Yield UK

Calculate gross and net annual rental yields for UK buy-to-let properties.

Rent Increase UK

Calculate prospective rent increases based on percentage adjustments and annual review standards.

Loan Eligibility UK

Check your potential loan eligibility based on income and expenses.

Mortgage Term Calculator

Find out how long it will take to pay off your UK mortgage based on your monthly payments.

Mortgage Overpayment

Calculate how much interest you could save by making monthly overpayments on your UK mortgage.

Rent Affordability

Use the 30% rule to find a recommended rent budget for your UK income.

Buy-to-Let Calculator

Analyze potential BTL property investments for yield and net profit.

Remortgage Calculator

Calculate how much you could save per month by remortgaging to a lower rate.

Mortgage Affordability

Estimate your maximum borrowing capacity for a UK mortgage based on income.

Stamp Duty Calculator UK

Calculate the Stamp Duty Land Tax (SDLT) for your UK property purchase.

Mortgage Calculator UK

Calculate your UK mortgage monthly payments, total interest, and LTV.

The Complete Mortgages & Property Guide

Understand the underlying math, regulations, and best practices for 2026.

UK Property Market Tools

Accurate calculators for UK home buyers and investors.

Frequently Asked Questions

We've compiled answers to the most common questions regarding Mortgages & Property calculations and logic for the current tax year.

Are these Mortgages & Property calculators updated for 2026?

Yes. All of our formulas, including brackets, deduction limits, and contribution thresholds, are routinely verified and updated to reflect the latest published 2026 parameters by the IRS and specific financial authorities.

Do I need to create an account to use these tools?

No. PrimeCalculate is explicitly designed to be 100% free and open without registration. We do not place our calculating engines behind paywalls or email capture gates.

What makes these calculators different from others?

Rather than using generic global math, our engineers build USA-specific compliance into the logic layer. We utilize a secure backend calculation engine (Server-Side Rendring) instead of bloated front-end javascript, meaning you receive instantaneous and highly accurate results free from floating-point errors.

Should I treat these results as financial advice?

No. All tools are explicitly for educational and demonstrational purposes. Although we strive for exact accuracy up to five decimal points, your individual financial circumstances require advice from a certified fiduciary, tax attorney, or CPA.