Your lender calls this a prepayment or prepayment privilege.
Increase your payments
Increasing the amount of your regular payments, even by a small amount, may help you pay off your mortgage faster. You may only be able to increase your payments by a certain amount each year. The amount will be written in your mortgage contract.
Make a lump-sum payment
You can make a lump-sum payment on top of your regular mortgage payments to reduce the outstanding balance of your mortgage.
Lump-sum payments can be made:
Keep your monthly payments the same when you renew your mortgage
When you renew or renegotiate your mortgage, you may be able to get a lower interest rate. If so, you’ll have the option to reduce the amount of your regular payments. If you decide to keep your regular payments the same, you'll be able to pay off your mortgage faster.
Choose an “accelerated” option for your mortgage payments
An accelerated payment option lets you make weekly or biweekly payments while putting about the same amount of money toward your mortgage as a monthly payment. Accelerated payments can save you money on interest charges. By accelerating your payments, you make the equivalent of one extra monthly payment per year. You’ll likely not notice a big difference in the amount of your payments, yet it may save you a lot of money in interest.