Mortgage Overpay Calculator
Optimize Your Overpayments
Free · Designed for iPad
Take control of your mortgage and your future.
Mortgage Overpayment Calculator shows you exactly how much time and interest you can save by making one‑off or recurring overpayments, then lets you compare that strategy to investing or saving the money instead.
It’s fast, accurate, and designed to look amazing.
Enter your mortgage details in seconds: debt, term (years and months), mortgage type (repayment or interest‑only), and either your interest rate or your monthly payment.
Add overpayments as a fixed amount or a percentage, with flexible schedules (daily, bi‑weekly, monthly, bi‑monthly, bi‑annually, or annually).
Turn on “Compare to Savings” to project what you might earn at your chosen savings rate with your own tax rate.
Then explore crystal‑clear tables and charts that reveal your debt over time, months/years saved, interest saved, and your net benefit.
Save your scenarios, revisit them any time, and edit them as your finances change. It’s your mortgage—made understandable.
Key Features
• Flexible term input: Enter years and months for precise results.
• Repayment & interest‑only: Accurate models for both, including overpayment effects on principal.
• Smart overpayments: One‑off and recurring, as currency or %, with multiple frequencies.
• Savings comparison: Compare overpaying vs investing with custom interest and tax rates.
• Beautiful charts & tables: See your debt from Month 0 to payoff.
• Precision financials: Two‑decimal accuracy with correct payoff handling to £/$0.00.
• Save & edit: Keep multiple scenarios, overwrite or save as new - your choice!
• Modern UX: Clean, delightful SwiftUI design with your local currency symbol.
Why You’ll Love It
• Clarity: Instantly see how small changes save big money and time.
• Confidence: Make smarter decisions - overpay, invest, or both.
• Control: Build and compare multiple strategies as your life evolves.
How It Works
• Enter mortgage debt, term, and type
• Input interest rate or monthly payment (auto‑calculation fills the other)
• Add overpayments (one‑off and/or recurring) as £/$ or %
• Optionally compare to savings with your rate and tax
• Tap calculate to see time saved, interest saved, remaining debt, and charts
• Save your scenario for later and update anytime
Ideal For
• Homeowners planning to overpay
• First‑time buyers comparing options
• Anyone deciding between overpaying vs investing
This is a guide only, not financial advice. Consult a professional for personalized recommendations.
Ratings & Reviews
This app hasn’t received enough ratings or reviews to display an overview.
The developer, Tom Perry, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Location
- Identifiers
- Usage Data
- Diagnostics
Data Linked to You
The following data may be collected and linked to your identity:
- Location
- Identifiers
- Usage Data
- Diagnostics
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Tom Perry
- Size
- 11.9 MB
- Category
- Finance
- Compatibility
Requires iOS 18.2 or later.
- iPhone
Requires iOS 18.2 or later. - iPad
Requires iPadOS 18.2 or later. - Mac
Requires macOS 15.2 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.2 or later.
- Languages
- English
- Age Rating
4+
- 4+
- Contains
Advertising
- Copyright
- © 2025 Tom Perry