Sselfinance
    Debt Repayment

    Should You Overpay Your Mortgage or Invest? See the Answer.

    Model any repayment scenario in seconds. Watch your payoff date move, your interest cost drop, and your net worth rise — all connected on one screen.

    Mortgages · loans · cards ✓Overpayment simulations ✓Payoff date forecast ✓
    Features

    Every debt, one strategy

    Simulations, charts, and a finish date — connected to the rest of your net worth.

    Debt Repayment Strategy

    Plan the optimal way to repay your mortgage and other debts with tailored strategies.

    Installment Simulations

    Test different installment amounts and see how they affect your total repayment time and interest.

    Repayment Calculator

    Use our smart calculator to estimate payments and adjust based on your goals and budget.

    Visual Progress Presentation

    Track your repayment progress visually with charts that show principal vs. interest over time.

    Strategy Finish Date

    Get a clear forecast of when you’ll finish repaying your mortgage or debt based on your plan.

    How it works

    From loan terms to a payoff plan

    01

    Add your debts

    Mortgage, loans, credit cards — enter the balance, rate, and installment once.

    02

    Simulate strategies

    Test overpayment amounts and repayment types; every scenario shows total interest and the new finish date.

    03

    Track it against net worth

    Your chosen strategy lives next to your assets, so repayment progress and net worth move together.

    In practice

    Questions it answers in seconds

    Overpay or invest?

    Compare the interest an overpayment saves against what the same cash could earn invested.

    $300/mo extra → 6 yrs earlier

    See the true cost of a loan

    Principal vs. interest over the full term — before and after your strategy.

    Interest cut by $24,800

    Know your debt-free date

    Every liability shows a projected finish date that updates as you repay.

    Mortgage-free: Mar 2041
    Free calculators

    Run the numbers yourself

    No account needed — the same math the app uses, open to everyone.

    Debt Payoff CalculatorSnowball vs avalanche payoff
    Mortgage Overpayment CalculatorSave interest, finish early
    FAQ

    Frequently asked questions

    Quick answers to the questions people ask most before getting started.

    What types of debts and mortgages can I manage with this tool?

    You can manage all types of debts including mortgages, credit cards, loans, and more. There are no limits on the types of debts you can track.

    Can I simulate different repayment plans?

    Yes, you can use the calculator to simulate how your repayment strategy will work with different inputs, such as repayment type, amount, and duration.

    Does the tool show a visual presentation of my repayment progress?

    The strategy is presented in charts and tables showing how repayments will proceed in coming months, plus visualizing future changes and outcomes.

    Can I track the expected finish date of my mortgage or debt repayment?

    The expected finish date based on your repayment strategy is presented on the liability details page.

    Can I manage repayment strategies for multiple debts simultaneously?

    Yes, depending on your pricing plan, you can add up to 10 (Base) or 100 (Pro) different debts, each with its own repayment strategy.

    Is there a visual summary to compare different repayment strategies?

    This feature will be added in the future to allow comparison of results for different repayment strategies.

    Get started

    Your complete financial picture, finally in one place

    Replace the spreadsheet juggle and the four-app routine with one automated view of your net worth, budget, and investments.

    10 free calculators · EU-hosted & GDPR · Works with Claude & ChatGPT · Cancel anytime

    Sselfinance

    Your personal finance companion for tracking net worth, expenses, savings, and investments — in one place.

    Product

    • Features
    • Pricing
    • Calculators
    • Guides
    • Assets

    Features

    • Dashboard & net worth
    • Budget
    • AI connector (Claude & ChatGPT)
    • Emergency fund
    • Debt repayment

    Compare

    • Selfinance vs YNAB
    • Vs your spreadsheet
    • Vs the four-app stack

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