Where your first 5 years of payments go
On a 30-year $100,000 loan at 7.24%, the early payments are mostly interest. Over the first five years you pay $40,890, of which only $5,631 (13.8%) reduces the balance and $35,259 is interest. A 15-year loan at 6.60% pays off $23,143 in the same five years.
| Year | Principal paid | Interest paid | Balance at end | Paid off |
|---|---|---|---|---|
| Year 1 | $970 | $7,208 | $99,030 | 1.0% |
| Year 2 | $1,042 | $7,136 | $97,988 | 2.0% |
| Year 3 | $1,120 | $7,058 | $96,868 | 3.1% |
| Year 4 | $1,204 | $6,974 | $95,663 | 4.3% |
| Year 5 | $1,294 | $6,884 | $94,369 | 5.6% |
Adding even $50 a month toward principal shortens the loan and cuts interest; model extra payments in the mortgage calculator.
Nearby loan amounts
| Loan | 30-yr P&I | 15-yr P&I | PITI 30-yr | Income (28%) |
|---|---|---|---|---|
| $100,000 | $681 | $877 | $840 | $36,004 |
| $125,000 | $852 | $1,096 | $1,050 | $45,005 |
| $150,000 | $1,022 | $1,315 | $1,260 | $54,006 |
FAQ
What is the monthly payment on a $100,000 mortgage?
At the Freddie Mac average 30-year fixed rate of 7.24% (week of October 29, 2026), principal and interest on $100,000 is $681 a month. A 15-year loan at 6.60% is $877 a month. Adding estimated property tax ($94) and homeowners insurance ($65) brings the 30-year payment to about $840.
How much income do I need for a $100,000 mortgage?
Using the 28% housing guideline, a $840 monthly housing payment (30-year, with tax and insurance) needs about $36,004 of gross annual income ($3,000 a month). Under the 36% total-debt guideline, that income leaves room for about $240 a month of car, student-loan and card payments.
How much interest will I pay on a $100,000 mortgage?
Over 30 years at 7.24% you would pay about $145,339 in interest, 145% of the amount borrowed. A 15-year loan at 6.60% costs about $57,791 in interest, saving $87,549.
How much does 1% on the rate change a $100,000 payment?
On a 30-year loan of $100,000, each additional percentage point adds roughly $69 a month near today's rates. For example, the payment is $600 at 6% and $665 at 7%.
What house price does a $100,000 mortgage buy?
With 20% down, a $100,000 loan buys a home of about $125,000, with a down payment of $25,000. With less than 20% down, lenders usually add private mortgage insurance (PMI), which raises the monthly cost.
Assumptions & sources
- Rates: Freddie Mac Primary Mortgage Market Survey, week of October 29, 2026 — 30-year fixed 7.24% (prior week 7.32%, a year earlier 6.17%), 15-year fixed 6.60%. PMMS rates are national averages for borrowers with strong credit and 20% down; quotes vary.
- Property tax: 0.9% of home value per year — the 2025 national effective rate for single-family homes (ATTOM 2025 property tax analysis; average bill $4,427).
- Insurance: $2,490 a year for $400,000 of dwelling coverage (NerdWallet, updated May 2026), scaled to the home price.
- 20% down payment, so no PMI; no HOA dues, closing costs or points. Payments rounded to the nearest dollar.