Bi-Weekly Mortgage Calculator Mortgage Principal ($) Annual Interest Rate (%) Amortization (years) 15 20 25 30 Compare Payment Options function calculateBiWeekly() { var principal = parseFloat(document.getElementById('bw-principal').value); var rate = parseFloat(document.getElementById('bw-rate').value)/100; var years = parseInt(document.getElementById('bw-amort').value); if (!principal||!rate) { alert('Please fill in all fields.'); return; } // Canadian semi-annual compounding var em = Math.pow(1+rate/2,1/6)-1; var n = years*12; var monthly = principal*em/(1-Math.pow(1+em,-n)); var totalMonthly = monthly*n; var intMonthly = totalMonthly-principal; // Regular bi-weekly: monthly/2, paid 26x/year var bwRegular = monthly/2; // Accelerated bi-weekly: monthly payment split in 2, paid 26x/year (extra ~1 month/year) var bwAccel = monthly/2; // Simulate accelerated payoff function simulateBW(bal, pmt, rate, periodsPerYear) { var periodicRate = Math.pow(1+rate/2, 2/periodsPerYear)-1; var months=0; var totalInt=0; var b=bal; while(b0&&months Payment Comparison '+ ' '+ ' Payment Type Payment Total Interest Payoff '+ ' Monthly '+fmt(monthly)+'/mo '+fmt(intMonthly)+' '+years+' yrs '+ ' Regular Bi-Weekly '+fmt(bwRegular)+'/2wk '+fmt(regularBW.interest)+' '+regularBW.years+' yrs '+ ' Accelerated Bi-Weekly '+fmt(bwAccel)+'/2wk '+fmt(accelResult.interest)+' '+accelResult.years+' yrs '+ ' '+ ' '+ 'Accelerated bi-weekly saves you '+fmt(savedInt)+' in interest and pays off your mortgage '+savedYears.toFixed(1)+' years early!'+ ' '; } Bi-Weekly vs Accelerated Bi-Weekly: What's the Difference? Regular bi-weekly: Monthly payment divided by 2, paid 26 times per year. Same total annual payment as monthly. Accelerated bi-weekly: Also paid 26 times per year, but each payment equals exactly half the monthly payment — resulting in one extra monthly payment per year. The accelerated option is where the real savings come from. You make the equivalent of 13 monthly payments per year instead of 12, which dramatically reduces your principal faster. How Much Can You Save?

Question

Bi-Weekly Mortgage Calculator Mortgage Principal ($) Annual Interest Rate (%) Amortization (years) 15 20 25 30 Compare Payment Options function calculateBiWeekly() { var principal = parseFloat(document.getElementById('bw-principal').value); var rate = parseFloat(document.getElementById('bw-rate').value)/100; var years = parseInt(document.getElementById('bw-amort').value); if (!principal||!rate) { alert('Please fill in all fields.'); return; } // Canadian semi-annual compounding var em = Math.pow(1+rate/2,1/6)-1; var n = years*12; var monthly = principal*em/(1-Math.pow(1+em,-n)); var totalMonthly = monthly*n; var intMonthly = totalMonthly-principal; // Regular bi-weekly: monthly/2, paid 26x/year var bwRegular = monthly/2; // Accelerated bi-weekly: monthly payment split in 2, paid 26x/year (extra ~1 month/year) var bwAccel = monthly/2; // Simulate accelerated payoff function simulateBW(bal, pmt, rate, periodsPerYear) { var periodicRate = Math.pow(1+rate/2, 2/periodsPerYear)-1; var months=0; var totalInt=0; var b=bal; while(b>0&&months Payment Comparison '+ ' '+ ' Payment Type Payment Total Interest Payoff '+ ' Monthly '+fmt(monthly)+'/mo '+fmt(intMonthly)+' '+years+' yrs '+ ' Regular Bi-Weekly '+fmt(bwRegular)+'/2wk '+fmt(regularBW.interest)+' '+regularBW.years+' yrs '+ ' Accelerated Bi-Weekly '+fmt(bwAccel)+'/2wk '+fmt(accelResult.interest)+' '+accelResult.years+' yrs '+ ' '+ ' '+ 'Accelerated bi-weekly saves you '+fmt(savedInt)+' in interest and pays off your mortgage '+savedYears.toFixed(1)+' years early!'+ ' '; } Bi-Weekly vs Accelerated Bi-Weekly: What's the Difference? Regular bi-weekly: Monthly payment divided by 2, paid 26 times per year. Same total annual payment as monthly. Accelerated bi-weekly: Also paid 26 times per year, but each payment equals exactly half the monthly payment — resulting in one extra monthly payment per year. The accelerated option is where the real savings come from. You make the equivalent of 13 monthly payments per year instead of 12, which dramatically reduces your principal faster. How Much Can You Save?

Accepted Answer

On a typical $500,000 mortgage at 5.25% over 25 years, switching to accelerated bi-weekly payments can save over $35,000 in interest and shave 3+ years off your mortgage.

Bi-Weekly Mortgage Payment Calculator Canada 2025

Bi-Weekly Mortgage Calculator

Bi-Weekly vs Accelerated Bi-Weekly: What's the Difference?

How Much Can You Save?

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