Loanweek

Biweekly vs monthly mortgage payments

$166.83/month difference in monthly payment

$103,385 difference in total interest

Biweekly (26 half payments): $2,168.79 a month. Monthly: $2,001.96 a month.

Source: Freddie Mac PMMS averages for the week of September 24, 2026: 30-year 7.03%, 15-year 6.42%. 20-year loans are priced at the 30-year average. Biweekly modelled as one extra monthly payment a year, spread across the months. An average, not an offer.

Side by side

Biweekly (26 half payments)Monthly
Amount borrowed$300,000$300,000
Rate7.03%7.03%
Monthly payment$2,168.79$2,001.96
Paid off in23 years 9 months30 years
Total interest$317,319$420,704
Balance remaining: Biweekly (26 half payments) vs MonthlyLoan balance at the end of each year for both options.Biweekly (26 half payments)Monthly$0$100k$200k$300kStartYear 15Year 30Biweekly (26 half payments), Start: $300kBiweekly (26 half payments), Year 1: $294.9kBiweekly (26 half payments), Year 2: $289.4kBiweekly (26 half payments), Year 3: $283.6kBiweekly (26 half payments), Year 4: $277.3kBiweekly (26 half payments), Year 5: $270.5kBiweekly (26 half payments), Year 6: $263.3kBiweekly (26 half payments), Year 7: $255.5kBiweekly (26 half payments), Year 8: $247.2kBiweekly (26 half payments), Year 9: $238.3kBiweekly (26 half payments), Year 10: $228.7kBiweekly (26 half payments), Year 11: $218.4kBiweekly (26 half payments), Year 12: $207.4kBiweekly (26 half payments), Year 13: $195.6kBiweekly (26 half payments), Year 14: $182.9kBiweekly (26 half payments), Year 15: $169.3kBiweekly (26 half payments), Year 16: $154.7kBiweekly (26 half payments), Year 17: $139.1kBiweekly (26 half payments), Year 18: $122.3kBiweekly (26 half payments), Year 19: $104.3kBiweekly (26 half payments), Year 20: $85kBiweekly (26 half payments), Year 21: $64.3kBiweekly (26 half payments), Year 22: $42kBiweekly (26 half payments), Year 23: $18.2kBiweekly (26 half payments), Year 24: $0Biweekly (26 half payments), Year 25: $0Biweekly (26 half payments), Year 26: $0Biweekly (26 half payments), Year 27: $0Biweekly (26 half payments), Year 28: $0Biweekly (26 half payments), Year 29: $0Biweekly (26 half payments), Year 30: $0Monthly, Start: $300kMonthly, Year 1: $297kMonthly, Year 2: $293.7kMonthly, Year 3: $290.2kMonthly, Year 4: $286.5kMonthly, Year 5: $282.5kMonthly, Year 6: $278.2kMonthly, Year 7: $273.6kMonthly, Year 8: $268.6kMonthly, Year 9: $263.3kMonthly, Year 10: $257.6kMonthly, Year 11: $251.5kMonthly, Year 12: $245kMonthly, Year 13: $237.9kMonthly, Year 14: $230.4kMonthly, Year 15: $222.3kMonthly, Year 16: $213.6kMonthly, Year 17: $204.3kMonthly, Year 18: $194.4kMonthly, Year 19: $183.7kMonthly, Year 20: $172.2kMonthly, Year 21: $159.9kMonthly, Year 22: $146.7kMonthly, Year 23: $132.5kMonthly, Year 24: $117.3kMonthly, Year 25: $101kMonthly, Year 26: $83.6kMonthly, Year 27: $64.8kMonthly, Year 28: $44.7kMonthly, Year 29: $23.1kMonthly, Year 30: $0

Questions

Which has the lower monthly payment?

Monthly, by $166.83 a month ($2,168.79 vs $2,001.96).

Which costs less overall?

Biweekly (26 half payments) saves $103,385 in interest ($317,319 vs $420,704).

What rates are these figures based on?

Freddie Mac PMMS averages for the week of September 24, 2026: 30-year 7.03%, 15-year 6.42%. 20-year loans are priced at the 30-year average. Biweekly modelled as one extra monthly payment a year, spread across the months.

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.