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Vehicle Finance Calculator

Vehicle Finance Calculator — Price / SAC. Comparison. Estimated effective cost.

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Term in months: 1–600. Vehicle price, Other costs: 0–1 000 000 000. Percentage: 0–100%. Down payment ≤ Vehicle price.

How does it work?

Simulate a car, motorcycle or other vehicle loan. Price minus down payment is the purchase credit; only financed costs increase principal.

Price uses constant base payments at a fixed rate. SAC uses constant principal repayments, with declining interest and base payments.

Simulation, not a bank offer or contractual effective cost. Payments occur at month-end; only entered costs are included. Extra principal is paid after the installment: retain the Price payment or SAC principal amount to shorten the term, or spread the remaining balance over the remaining term to lower payments. No intermediate rounding; final residual adjustment. Effective cost compares net credit less upfront costs with monthly payments. No irregular dates or indexation.

Financed

Vehicle price − Down payment + Financed (Other costs)

Down payment ↑ → Financed ↓; Term in months ↑ → Base installment ↓, Interest ↑ (i > 0).

Price

PV = Financed; i = Effective monthly; n = Term in months; PMT = Base installment.

PMT = PV × i / (1 − (1 + i)⁻ⁿ); i = 0 → PMT = PV / n

SAC

Principal repayment = PV / n

Base installment = PV / n + Outstanding balance × i

Estimated effective cost

PV (Vehicle price − Down payment − Upfront) = Σ Pₜ / (1 + r)ᵗ

i = (1 + rₐ)^(1/12) − 1; rₐ = (1 + r)¹² − 1

Price × SAC

Price uses constant base payments at a fixed rate. SAC uses constant principal repayments, with declining interest and base payments. Compare down payment, term, interest, expenses and total outlay on equal terms. Neither model is always better; contracts may include conditions not simulated.

Extra principal payment

Simulation, not a bank offer or contractual effective cost. Payments occur at month-end; only entered costs are included. Extra principal is paid after the installment: retain the Price payment or SAC principal amount to shorten the term, or spread the remaining balance over the remaining term to lower payments. No intermediate rounding; final residual adjustment. Effective cost compares net credit less upfront costs with monthly payments. No irregular dates or indexation.