Why is so much of my early payment interest?

Interest is charged on the outstanding balance, which is highest at the start. As principal falls, more of each payment goes to principal.

Do extra payments automatically reduce my term?

They reduce the balance faster; most lenders apply them to principal and the loan simply ends earlier. Confirm there is no prepayment penalty.

Amortization Calculator

The general-purpose amortization tool for any fixed-rate loan. Enter amount, term, rate and optional extra monthly payments to get the monthly payment, total interest and a complete year-by-year amortization schedule showing principal and interest split.

#amortization#amortization schedule#loan payment#principal and interest#extra payments

Live calculate

Presets

Loan Amount

Loan Term

years

Additional Months

months

Interest Rate

Extra Monthly Payment

Optional — extra principal each month shortens the loan and saves interest.

Live mode: results update as you type.

Monthly Pay

$1,687.71

$200,000 over 180 months at 6.00%

Total of Payments: $303,788.46
Total Interest: $103,788.46
Interest as % of Loan: 51.9%
Payoff Time: 15 yr 0 mo

Principal vs interest

Principal$200,000
Interest$103,788

Amortization schedule (annual)

Year	Beginning Balance	Total Paid	Principal	Interest	Ending Balance
Year 1	$200,000.00	$20,252.56	$8,483.33	$11,769.23	$191,516.67
Year 2	$191,516.67	$20,252.56	$9,006.57	$11,246.00	$182,510.10
Year 3	$182,510.10	$20,252.56	$9,562.07	$10,690.49	$172,948.02
Year 4	$172,948.02	$20,252.56	$10,151.84	$10,100.72	$162,796.18
Year 5	$162,796.18	$20,252.56	$10,777.98	$9,474.58	$152,018.20
Year 6	$152,018.20	$20,252.56	$11,442.75	$8,809.82	$140,575.45
Year 7	$140,575.45	$20,252.56	$12,148.51	$8,104.05	$128,426.94
Year 8	$128,426.94	$20,252.56	$12,897.80	$7,354.76	$115,529.13
Year 9	$115,529.13	$20,252.56	$13,693.31	$6,559.25	$101,835.82
Year 10	$101,835.82	$20,252.56	$14,537.89	$5,714.68	$87,297.94
Year 11	$87,297.94	$20,252.56	$15,434.55	$4,818.01	$71,863.38
Year 12	$71,863.38	$20,252.56	$16,386.52	$3,866.04	$55,476.86
Year 13	$55,476.86	$20,252.56	$17,397.21	$2,855.36	$38,079.66
Year 14	$38,079.66	$20,252.56	$18,470.23	$1,782.34	$19,609.43
Year 15	$19,609.43	$20,252.56	$19,609.43	$643.13	$0.00

Most useful next

Formula

Payment = P × r(1+r)^n / ((1+r)^n − 1)

Pro tips

• Extra payments early in the loan save the most interest — that is when the balance is largest.
• Amortization schedules assume fixed rates; ARMs and interest-only loans do not amortize like this.
• Round up your payment to the nearest $50 for painless acceleration.

FAQ

Related Calculators

More Finance tools you might need.

Amortization Calculator

#amortization#amortization schedule#loan payment#principal and interest#extra payments

Live calculate

Presets

Loan Amount

Loan Term

years

Additional Months

months

Interest Rate

Extra Monthly Payment

Optional — extra principal each month shortens the loan and saves interest.

Live mode: results update as you type.

Monthly Pay

$1,687.71

$200,000 over 180 months at 6.00%

Total of Payments: $303,788.46
Total Interest: $103,788.46
Interest as % of Loan: 51.9%
Payoff Time: 15 yr 0 mo

Principal vs interest

Principal$200,000
Interest$103,788

Amortization schedule (annual)

Year	Beginning Balance	Total Paid	Principal	Interest	Ending Balance
Year 1	$200,000.00	$20,252.56	$8,483.33	$11,769.23	$191,516.67
Year 2	$191,516.67	$20,252.56	$9,006.57	$11,246.00	$182,510.10
Year 3	$182,510.10	$20,252.56	$9,562.07	$10,690.49	$172,948.02
Year 4	$172,948.02	$20,252.56	$10,151.84	$10,100.72	$162,796.18
Year 5	$162,796.18	$20,252.56	$10,777.98	$9,474.58	$152,018.20
Year 6	$152,018.20	$20,252.56	$11,442.75	$8,809.82	$140,575.45
Year 7	$140,575.45	$20,252.56	$12,148.51	$8,104.05	$128,426.94
Year 8	$128,426.94	$20,252.56	$12,897.80	$7,354.76	$115,529.13
Year 9	$115,529.13	$20,252.56	$13,693.31	$6,559.25	$101,835.82
Year 10	$101,835.82	$20,252.56	$14,537.89	$5,714.68	$87,297.94
Year 11	$87,297.94	$20,252.56	$15,434.55	$4,818.01	$71,863.38
Year 12	$71,863.38	$20,252.56	$16,386.52	$3,866.04	$55,476.86
Year 13	$55,476.86	$20,252.56	$17,397.21	$2,855.36	$38,079.66
Year 14	$38,079.66	$20,252.56	$18,470.23	$1,782.34	$19,609.43
Year 15	$19,609.43	$20,252.56	$19,609.43	$643.13	$0.00

Most useful next

Formula

Payment = P × r(1+r)^n / ((1+r)^n − 1)

Pro tips

• Extra payments early in the loan save the most interest — that is when the balance is largest.
• Amortization schedules assume fixed rates; ARMs and interest-only loans do not amortize like this.
• Round up your payment to the nearest $50 for painless acceleration.

FAQ

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More Finance tools you might need.

Amortization Calculator

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