Loanweek

28% vs 36% rule for how much house you can afford

$533.33/month difference in monthly payment

$93,252 difference in total interest

28% of income ($258,600 home): $1,866.67 a month. 36% of income, no other debt ($332,485 home): $2,400.00 a month.

Source: Income $80,000 a year, 10% down, 30 years at the 7.03% Freddie Mac average, estimated property tax; insurance not included. An average, not an offer.

Side by side

28% of income ($258,600 home)36% of income, no other debt ($332,485 home)
Amount borrowed$232,740$299,237
Rate7.03%7.03%
Monthly payment$1,866.67$2,400.00
Paid off in30 years30 years
Total interest$326,382$419,634
Balance remaining: 28% of income ($258,600 home) vs 36% of income, no other debt ($332,485 home)Loan balance at the end of each year for both options.28% of income ($258,600 home)36% of income, no other debt ($332,485 home)$0$100k$200k$300kStartYear 15Year 3028% of income ($258,600 home), Start: $232.7k28% of income ($258,600 home), Year 1: $230.4k28% of income ($258,600 home), Year 2: $227.9k28% of income ($258,600 home), Year 3: $225.2k28% of income ($258,600 home), Year 4: $222.3k28% of income ($258,600 home), Year 5: $219.2k28% of income ($258,600 home), Year 6: $215.8k28% of income ($258,600 home), Year 7: $212.2k28% of income ($258,600 home), Year 8: $208.4k28% of income ($258,600 home), Year 9: $204.3k28% of income ($258,600 home), Year 10: $199.9k28% of income ($258,600 home), Year 11: $195.1k28% of income ($258,600 home), Year 12: $190k28% of income ($258,600 home), Year 13: $184.6k28% of income ($258,600 home), Year 14: $178.7k28% of income ($258,600 home), Year 15: $172.5k28% of income ($258,600 home), Year 16: $165.7k28% of income ($258,600 home), Year 17: $158.5k28% of income ($258,600 home), Year 18: $150.8k28% of income ($258,600 home), Year 19: $142.5k28% of income ($258,600 home), Year 20: $133.6k28% of income ($258,600 home), Year 21: $124k28% of income ($258,600 home), Year 22: $113.8k28% of income ($258,600 home), Year 23: $102.8k28% of income ($258,600 home), Year 24: $91k28% of income ($258,600 home), Year 25: $78.4k28% of income ($258,600 home), Year 26: $64.8k28% of income ($258,600 home), Year 27: $50.3k28% of income ($258,600 home), Year 28: $34.7k28% of income ($258,600 home), Year 29: $17.9k28% of income ($258,600 home), Year 30: $036% of income, no other debt ($332,485 home), Start: $299.2k36% of income, no other debt ($332,485 home), Year 1: $296.2k36% of income, no other debt ($332,485 home), Year 2: $293k36% of income, no other debt ($332,485 home), Year 3: $289.5k36% of income, no other debt ($332,485 home), Year 4: $285.8k36% of income, no other debt ($332,485 home), Year 5: $281.8k36% of income, no other debt ($332,485 home), Year 6: $277.5k36% of income, no other debt ($332,485 home), Year 7: $272.9k36% of income, no other debt ($332,485 home), Year 8: $267.9k36% of income, no other debt ($332,485 home), Year 9: $262.6k36% of income, no other debt ($332,485 home), Year 10: $257k36% of income, no other debt ($332,485 home), Year 11: $250.9k36% of income, no other debt ($332,485 home), Year 12: $244.3k36% of income, no other debt ($332,485 home), Year 13: $237.3k36% of income, no other debt ($332,485 home), Year 14: $229.8k36% of income, no other debt ($332,485 home), Year 15: $221.7k36% of income, no other debt ($332,485 home), Year 16: $213.1k36% of income, no other debt ($332,485 home), Year 17: $203.8k36% of income, no other debt ($332,485 home), Year 18: $193.9k36% of income, no other debt ($332,485 home), Year 19: $183.2k36% of income, no other debt ($332,485 home), Year 20: $171.8k36% of income, no other debt ($332,485 home), Year 21: $159.5k36% of income, no other debt ($332,485 home), Year 22: $146.3k36% of income, no other debt ($332,485 home), Year 23: $132.2k36% of income, no other debt ($332,485 home), Year 24: $117k36% of income, no other debt ($332,485 home), Year 25: $100.8k36% of income, no other debt ($332,485 home), Year 26: $83.3k36% of income, no other debt ($332,485 home), Year 27: $64.6k36% of income, no other debt ($332,485 home), Year 28: $44.6k36% of income, no other debt ($332,485 home), Year 29: $23.1k36% of income, no other debt ($332,485 home), Year 30: $0

Questions

Which has the lower monthly payment?

28% of income ($258,600 home), by $533.33 a month ($1,866.67 vs $2,400.00).

Which costs less overall?

28% of income ($258,600 home) saves $93,252 in interest ($326,382 vs $419,634).

What rates are these figures based on?

Income $80,000 a year, 10% down, 30 years at the 7.03% Freddie Mac average, estimated property tax; insurance not included.

Can I compare a different amount?

Yes: change the amount above and press Compare. The page recalculates with the same rates.

Sources

Numbers on this page last changed September 26, 2026. How they are calculated: methodology.