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C.11 · Debt

Personal loan — monthly payment and total cost.

See the monthly payment and total cost on a loan with a fixed rate (the rate doesn't change). Add an extra payment to see how much sooner you'd be debt-free.

Formula
Fixed monthly payments
Same amount every month
Inputs
Loan amount
$25,000
Interest rate
8.00%
Loan term
5 yrs
Extra monthly paymentOptional — goes straight to the balance
$0
Monthly payment
$507/mo
Amount borrowed
$25,000
Time to pay off
5.0 yr
Total interest over the loan
$5,415
Total you'll repay
$30,415
How much you still owe, over time
How much you still owe shrinks over the 5-year loan
$0$10K$21KYear 0Year 2Year 5
Year by year

Year-by-year payoff schedule

How your loan balance shrinks over time. Early on, most of each payment is interest; later, most goes to paying down what you borrowed.

Year
Principal
Interest
Balance
Progress
1
$4,236
$1,847
$20,764
17%
2
$4,588
$1,495
$16,176
35%
3
$4,968
$1,115
$11,208
55%
4
$5,381
$702
$5,827
77%
5
$5,827
$256
$0
100%
How we compute this

How the monthly payment is worked out

Monthly payment = loan × [ r(1+r)^n ] / [ (1+r)^n − 1 ] where r is the monthly rate and n the number of months. Extra payments reduce principal directly.

M = P × [ r(1+r)n ] / [ (1+r)n − 1 ]

Same formula as a mortgage — shorter term just means fewer iterations of the amortization loop. Extra payments collapse the balance faster.

Recommended

Consolidate or refinance

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Good-credit borrowers funding a large expense

No origination fee plus borrowing up to $100,000 makes SoFi a strong pick when you need a sizable loan without upfront deductions.

APR from8.99%

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LightStream Personal Loan

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Strong-credit borrowers chasing the lowest rate

A starting APR of 7.49% with no origination fee and terms up to 144 months gives strong-credit borrowers low rates and long repayment flexibility.

APR from7.49%

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Marcus by Goldman Sachs Personal Loan

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Good-credit borrowers wanting a simple, fee-free loan

Marcus pairs a low 6.99% starting APR with no origination fee, so good-credit borrowers keep more of every dollar they borrow.

APR from6.99%

Frequently Asked Questions

Yes -- extra payments go directly toward principal, reducing the balance that accrues interest. Even small additional payments can save hundreds or thousands in interest and shorten your payoff timeline by months or years.