How Fast Could $150,000 Be Paid Off at 7% Over 30 Years With $300 Extra Monthly?

Calculated answer

$998

At 7% APR on a 30-year mortgage, the required payment starts near $998 per month. Adding $300 extra principal each month creates an estimated time savings of 167 months and about $109,043 in avoided interest.

Required monthly payment: $998
Estimated payoff time: 193 months
Time saved: 167 months
Interest saved: $109,043

How This Mortgage Payoff Example Works

Baseline mortgage payment + extra principal = shorter amortization schedule

The shared mortgage-payoff math compares the standard amortization schedule with an accelerated schedule that includes a fixed extra monthly payment.

Calculate the required payment for $150,000 over 30 years at 7% APR.
Apply $300 in extra principal every month.
Recompute the payoff month, total interest, and total amount paid.
Compare the accelerated schedule against the original mortgage timeline.

Mortgage Payoff Comparison

Year	Contributions	Interest / Growth	Ending Balance

When extra mortgage payments matter most

Extra principal can have its biggest impact when the remaining balance is high and many years of interest are still ahead.

That is why payoff examples can be useful even before deciding whether to recast, refinance, or simply keep the existing loan.

How the extra payment and term shape this example

An extra payment in this range is usually large enough to move the payoff date by a year or more without straining the household budget.

A 30-year baseline carries the most total interest of the common terms, so the same extra payment tends to save more in dollar terms here than on a shorter original term.

Run Your Own Mortgage Payoff Plan

Use the full calculator to test a different balance, rate, term, or extra-payment strategy.

Open the Mortgage Payoff Calculator Browse All Mortgage Payoff Examples

How Fast Could $150,000 Be Paid Off at 6% Over 30 Years With $300 Extra Monthly? $150,000 mortgage, 6% APR, 30-year term, $300 extra monthly. How Fast Could $150,000 Be Paid Off at 6.5% Over 30 Years With $300 Extra Monthly? $150,000 mortgage, 6.5% APR, 30-year term, $300 extra monthly. How Fast Could $150,000 Be Paid Off at 6.75% Over 30 Years With $300 Extra Monthly? $150,000 mortgage, 6.75% APR, 30-year term, $300 extra monthly. How Fast Could $250,000 Be Paid Off at 6% Over 30 Years With $300 Extra Monthly? $250,000 mortgage, 6% APR, 30-year term, $300 extra monthly.

Mortgage Payoff Calculator Model extra principal, payoff time, and interest savings using your own mortgage assumptions. Mortgage Payment Calculator Estimate the underlying monthly payment before comparing payoff strategies. Mortgage Recast Calculator Compare a lump-sum recast with a recurring extra-payment plan.

Mortgage and Home Buying Guide Hub Connect mortgage payments, payoff plans, refinance tradeoffs, and worked housing examples. How to Use Mortgage Payoff Calculator Understand how extra principal changes the amortization path.

Frequently Asked Questions

Does this example include taxes, insurance, or HOA dues?

No. It focuses on the principal-and-interest payoff path only, because extra payments apply to the loan balance rather than escrowed housing costs.

Is this the same as a mortgage recast?

No. A payoff strategy keeps paying extra principal, while a recast usually lowers the required payment after a lump-sum reduction.

Is $300 extra a small or large payment in this example?

It falls in the middle of the extra payments modeled across this cluster of examples, which is usually enough to shift the payoff date by a year or more.