Frequently asked questions
What does an amortization schedule show that a payment calculator doesn't?
An amortization schedule breaks down every payment period showing exactly how much goes to principal versus interest. It reveals the crossover point where principal starts exceeding interest, and shows how your balance declines over time — useful for planning extra payments or deciding when to refinance.
Why does so little of my early payments go to principal?
Interest is calculated on the outstanding balance each period. Early on, the balance is large so interest charges are high. As you pay down principal, the interest portion shrinks. On a 30-year loan at 6.5%, it takes about 17 years for more than half of each payment to go toward principal.
How can I use the schedule to plan extra payments?
Look at the interest column for each year. Any extra payment you make goes entirely to principal, which reduces all future interest charges. Making one extra monthly payment per year on a 30-year mortgage typically cuts 4–5 years off the loan. Target extra payments early when the interest savings compound most.
Does amortization work differently for different loan types?
The standard formula assumes fixed-rate, fully amortizing payments. Interest-only loans have no principal reduction during the interest period. Adjustable-rate loans re-amortize at each rate change. Balloon loans amortize over a longer term but require a lump payment at maturity.
What happens if I make payments more frequently (biweekly)?
Biweekly payments mean 26 half-payments per year instead of 12 full payments, which equals one extra full payment annually. This alone can cut 4–6 years off a 30-year mortgage and save significant interest. The math is straightforward: more frequent payments reduce the balance faster, so less interest accrues.
Is the amortization schedule the same as the loan statement from my bank?
Not always. Bank statements may round differently, include escrow for taxes and insurance, or reflect actual payment dates rather than exact monthly intervals. This schedule shows the mathematical amortization of principal and interest only, which is ideal for planning.