Putting Extra Payment on Principal Calculator

Putting extra payments on your mortgage principal can significantly reduce your interest costs and pay off your loan faster. This calculator helps you determine exactly how much you'll save by making extra principal payments.

How Putting Extra on Principal Works

When you make extra payments on your mortgage principal, you're essentially paying down the loan balance faster than the scheduled payments would. This approach has several benefits:

Reduces the total interest paid over the life of the loan
Shortens the loan term and saves on interest costs
Builds equity faster in your home
May qualify you for lower interest rates if you maintain a good credit score

Note: While putting extra on principal can be beneficial, it's important to consider your financial situation. Extra payments may reduce your emergency savings or retirement contributions.

How Extra Payments Affect Your Loan

The impact of extra principal payments depends on several factors:

Your current loan balance
The interest rate on your loan
How often you make extra payments
Whether you make lump-sum payments or biweekly payments

By making extra principal payments, you're essentially accelerating the payoff of your mortgage. This means you'll pay less in interest over the life of the loan, even if you make the same total amount of payments.

Using the Calculator

Our calculator makes it easy to determine how much you'll save by putting extra payments on your principal. Simply enter your loan details and see the results.

How to Use the Calculator

Enter your current loan balance
Enter your current interest rate
Enter your monthly payment amount
Enter the amount of your extra payment
Select how often you'll make the extra payment
Click "Calculate" to see your results

The calculator will show you:

How much you'll save in interest
How much faster you'll pay off your loan
A comparison of your original and accelerated payoff schedules

Formula Explained

The calculator uses the following formula to determine the impact of extra principal payments:

Total Interest Saved = (Original Loan Term - Accelerated Loan Term) × Monthly Interest Rate × Loan Balance

Where:

Original Loan Term = Original loan term in months
Accelerated Loan Term = New loan term with extra payments in months
Monthly Interest Rate = Annual interest rate divided by 12
Loan Balance = Current loan balance

This formula calculates the difference in interest paid between the original loan term and the accelerated loan term with extra payments.

Worked Example

Let's look at an example to see how putting extra on principal works in practice.

Example Scenario

Loan Balance: $200,000
Interest Rate: 4.5% APR
Monthly Payment: $1,000
Extra Payment: $500 per month
Payment Frequency: Monthly

Results

With these numbers, the calculator would show:

Original loan term: 20 years (240 months)
Accelerated loan term: 15 years (180 months)
Total interest saved: $24,000
Payoff accelerated by: 5 years

This example shows how putting extra on principal can significantly reduce your interest costs and pay off your loan faster.

FAQ

How does putting extra on principal work?

Putting extra on principal means paying more than your minimum monthly payment toward the principal balance of your loan. This reduces the amount of interest you'll pay over the life of the loan and shortens the loan term.

Is it better to make lump-sum payments or biweekly payments?

Both options can be effective, but lump-sum payments typically have a greater impact on reducing interest and accelerating payoff. Biweekly payments (paying every two weeks instead of monthly) can also be beneficial, especially if you can afford to pay an extra $100-$200 per month.

Will putting extra on principal qualify me for a lower interest rate?

Some lenders may offer lower interest rates if you maintain a good credit score and demonstrate responsible borrowing habits, including making extra principal payments.

What are the risks of putting extra on principal?

The main risk is that you may reduce your emergency savings or retirement contributions. It's important to consider your financial situation before making extra principal payments.

Can I put extra on principal with any type of loan?

Extra principal payments can typically be made on mortgages, home equity loans, and some personal loans. However, check with your lender to confirm their policies.