CSL repayment trajectory.
Months to clear
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Interest paid on provincial
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Your breakdown
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Your loan is really two loans
Most Canadians who borrowed for post-secondary hold an integrated student loan that bundles a federal Canada Student Loan with a provincial portion, and the two halves now behave very differently. Since April 2023 the federal Canada Student Loan charges zero interest, permanently. The provincial side is a patchwork: some provinces have also dropped interest to nil, while others still charge it. That split changes the smart repayment order completely. Because your federal balance is not growing, there is no rush to attack it, but any interest-bearing provincial balance is quietly costing you every month. This tool reflects that by letting you enter the two balances separately and directing every spare dollar at the provincial portion first.
The calculator is for graduates trying to see a realistic payoff date and understand how much interest the provincial slice will cost over the life of the loan. It is especially useful for deciding whether to accelerate payments or let the interest-free federal portion ride.
Clearing $25,000 across both portions
Take a graduate with $15,000 in federal Canada Student Loans at zero percent, $10,000 in a provincial loan still charging 8 percent, paying $300 a month total. The tool applies each payment to the interest-bearing provincial loan first, then the federal balance once provincial is gone.
Just over seven years and about $1,347 in interest, every dollar of it from the provincial loan. The $15,000 federal portion adds nothing to the interest tab because it sits at zero percent. If both loans had carried 8 percent, the interest cost would have been several times higher.
The student loan interest tax credit
One detail this tool does not show but you should not ignore: interest you pay on a government student loan qualifies for a non-refundable federal tax credit at the lowest rate, 15 percent, plus a provincial component. On $1,347 of provincial interest, that credit is worth roughly $200 federally, lowering the real cost of the loan. The credit applies only to interest on qualifying federal and provincial student loans, not to a line of credit or a loan you consolidated elsewhere, which is a strong reason to keep your government loan rather than refinance it privately. You can also carry unused student loan interest forward for up to five years and claim it in a year when you actually owe tax.
When not to rush repayment
Because the federal portion is interest-free, the usual advice to pay off debt fast does not fully apply. A dollar that clears a zero-percent federal loan saves you nothing, while the same dollar in a TFSA or RRSP can grow. The genuinely smart sequence is to clear any interest-bearing provincial balance quickly, then make only the required minimum payments on the interest-free federal portion and redirect the rest toward investing or higher-rate debt like credit cards. Paying down a zero-percent loan ahead of schedule is one of the few cases where extra principal payments are not the optimal move.
Does the federal interest-free change apply to my existing loan?
Yes. The elimination of interest on Canada Student Loans was not limited to new borrowers. From April 2023 onward the federal portion of every outstanding government student loan stopped accruing interest, including loans taken out years earlier. Any federal interest that had accrued before that date is still owed, but no new federal interest is added. The change does not touch your provincial balance, so if your province still charges interest, that side of the loan keeps growing as before.
Do missed student loan payments hurt my credit score?
They can. Government student loans are reported to the credit bureaus, and a payment that falls more than 90 days behind can land on your credit report and drag your score down, making future borrowing harder and pricier. This is exactly why the Repayment Assistance Plan exists: enrolling reduces or pauses your required payment without it counting as a missed payment, protecting your credit. If money is tight, apply for assistance before you skip a payment, not after.
Does paying extra each month change my required payment?
Making a lump-sum or extra payment reduces your balance and shortens the payoff timeline, but it does not automatically lower your scheduled monthly minimum unless you formally request a recalculation. If your goal is to free up monthly cash flow rather than finish faster, ask the service centre to re-amortize the loan over the remaining term after a large payment.