Amortization
The process of paying off a loan through regular payments that cover both interest and principal, so the balance reaches zero by the end of the term. A 30-year DSCR loan fully amortizes.
Amortization is the gradual repayment of a loan through scheduled payments that include both interest and principal, structured so the balance reaches zero by the end of the term. An amortization schedule maps every payment, showing how each one splits between interest and principal over the life of the loan.
How an amortizing payment works
Early in the loan, most of each payment goes to interest (because the balance is large). Over time, as the balance shrinks, more of each payment goes to principal. The monthly payment stays the same on a fixed loan, but its composition shifts:
| Stage | Interest portion | Principal portion |
|---|---|---|
| Early years | Large | Small |
| Middle | Roughly even | Roughly even |
| Late years | Small | Large |
A worked example
A $200,000 loan at 7.25% on a 30-year amortization has a payment of about $1,364/month. In month one, roughly $1,208 is interest and only ~$156 is principal. By the final year, nearly the entire payment is principal. The principal portion is what builds your equity through paydown.
Amortization term vs. loan term
These aren't always the same — a key nuance on investor loans:
- Amortization term: the period the payment is calculated over (e.g., 30 years).
- Loan term (maturity): when the loan actually comes due.
Many commercial and some DSCR loans have a 30-year amortization but a shorter maturity — e.g., payments sized over 30 years but a balloon payment due in year 5 or 10. You get a low amortizing payment but still owe the remaining balance at maturity.
Where investors meet amortization
- Long-term rentals: a 30-year DSCR loan fully amortizes — no balloon, equity builds steadily, and the principal paydown is a quiet but real component of your total return.
- Short-term loans: hard money and bridge loans usually don't amortize — they're interest-only with a balloon, so you build no equity through paydown during the short hold.
Why it matters
Amortization affects both your payment (a longer amortization lowers the monthly payment, helping DSCR) and your equity build (faster amortization pays down principal sooner). When comparing loans, check both the rate and the amortization, because a 30-year amortization and a 25-year amortization at the same rate produce different payments and different DSCRs.
Frequently asked questions
What does it mean for a loan to be fully amortizing?
A fully amortizing loan pays off completely by the end of its term through regular payments of interest and principal — there's no balloon left over. A standard 30-year DSCR loan is fully amortizing: make every scheduled payment and the balance reaches zero in 30 years.
Why is most of my early payment going to interest?
Because interest is charged on the outstanding balance, which is largest at the start. Early payments are mostly interest with little principal; as the balance falls, the principal portion grows. This is normal amortization and is why equity builds slowly in a loan's first years.
Can a loan have a 30-year amortization but a shorter term?
Yes. Many commercial and some DSCR loans calculate the payment over 30 years (keeping it low) but mature earlier — say in 5 or 10 years — with a balloon for the remaining balance. You get an affordable amortizing payment but must refinance or pay off the balance at maturity.