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sac vs price amortization

SAC vs PRICE: which system hits your budget harder?

People looking for SAC vs PRICE usually want to choose between “lower installment now” and “less total interest overall”.

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Differences that matter

  • In SAC, amortization is constant and installments decline over time; in PRICE, the installment stays level while its internal composition changes month by month.
  • PRICE often eases the initial cash-flow burden, but SAC tends to reduce total interest cost when compared with the same term and rate.

Questions this page answers

Tighter monthly budget

Input
Mesmo principal + mesma taxa
Expected output
PRICE tende a começar com parcela menor

Useful when the first-year budget is tighter.

Focus on total interest

Input
Mesmo principal + prazo longo
Expected output
SAC costuma economizar juros no agregado

Helps users look beyond the first installment.

Full tool FAQ

SAC is generally cheaper in total interest because the outstanding balance decreases faster, reducing the base for monthly interest charges.

Frequently asked questions

Is SAC always better?

No. It may cost less in interest but require a higher initial installment, which can squeeze cash flow.

Is PRICE “wrong” because it pays more interest?

Not at all. It can be better when installment predictability matters more than minimizing total interest.