Invest vs Pay Debt
Deciding between investing your extra money or using it to pay debt is one of the most important financial decisions. There's no universal answer: it depends on interest rates, your risk tolerance, and your personal situation. This calculator helps you compare both scenarios with real numbers.
Factors to Consider
- Loan interest rate: If it's high (>5%), paying debt may be better
- Expected investment return: If it's higher than the loan rate, investing may make sense
- Time horizon: The longer the period, the more time investments have to grow
- Risk tolerance: Investments carry risk; paying debt is guaranteed savings
- Emergency fund: Always prioritize having 3-6 months of expenses saved first
Practical Example
You have $500/month free and a mortgage at 3%. What's better over 10 years?
- Invest in index fund (7% annual): Accumulate ~$86,000 in 10 years
- Pay down mortgage (3% savings): Save ~$20,000 in guaranteed interest
- In this case, investing mathematically wins — if you accept the market risk
Want to see exactly how much you'd save by paying off your mortgage faster? Use our Early Payment Simulator. To project your investment growth, visit our Compound Interest Calculator.
Frequently Asked Questions
When should I pay off debt instead of investing?
If your loan's interest rate is higher than the expected return from investing (after taxes), it's better to pay the debt first.
When does it make more sense to invest?
If your debt has a low rate (2-3%) and you expect more than 6-7% from long-term investments, investing may mathematically make more sense. But returns aren't guaranteed.
Should I have an emergency fund first?
Yes, always. Before directing extra money to investments or debt payoff, have at least 3-6 months of essential expenses in a safe, accessible account.
What is the risk-free rate?
The risk-free rate is the return on investments considered safe, like government bonds. If your debt rate is lower than this rate, it may make more sense to invest.
Does the calculator account for taxes?
The calculator shows gross results. Investment returns may be subject to capital gains taxes, which reduces the net return. Consider this in your final decision.
Also see: Compound Interest · Loan Simulator