Motorcycle Loan Amortization Calculator

The tool uses standard amortization mathematics: a fixed-rate loan's periodic payment is computed by solving the present-value annuity formula for the payment amount given the periodic interest rate and number of periods.

For accelerated bi-weekly schedules we treat the schedule as 26 equal periods per year and compute per-period rate = APR / 26. For split-monthly (half-month) we compute the monthly payment then divide by two to model half-month payments (26 such half-payments per year).

Early-payoff estimates use the algebraic rearrangement of the annuity formula to solve for the number of periods required when a higher periodic payment (scheduled payment plus fixed extra) is applied. Irregular extra payments, variable rates, fees, compounding conventions, or deferred interest are not modeled and will change actual results.

Choose monthly or bi-weekly modes depending on how you intend to make payments. Accelerated bi-weekly and split-monthly both typically reduce total interest versus monthly because they increase annual principal payments, but the magnitude differs.

Use the extra-payment input to model fixed additions; irregular one-time payments are not directly amortized by the formula and should be handled with a lender-provided payoff schedule.

Example A: $8,000 loan at 6.5% APR for 4 years: standard monthly payment is computed with 12 periods/year.

Example B: Same loan on an accelerated bi-weekly schedule (26/year) computes a smaller per-period payment but results in extra annual principal payments versus monthly, shortening payoff and reducing total interest.

Example C: Apply $25 extra to each bi-weekly payment to see an approximate new payoff time and interest reduction (results assume fixed interest and regular extras).