What is an amortized loan?
An amortized loan is a loan repaid through scheduled periodic installments where each payment includes both interest and principal, and the balance gradually declines to zero by the end of the term.
Loan Calculator
Use this loan calculator to estimate monthly payments, total interest, and repayment timelines for common fixed-rate borrowing scenarios.
Loan Calculator
A loan is a contract between a borrower and a lender in which the borrower receives an amount of money and pays it back in the future.
Modify the values and click the Calculate button to use
Amortized Loan: Paying Back a Fixed Amount Periodically
Results
Payment Every Period$1,110.21
Total of 120 Payments$133,224.60
Total Interest$33,224.60
Principal $100,000.00
Interest $33,224.60
Principal 75.06% · Interest 24.94%
Deferred Payment Loan: Paying Back a Lump Sum Due at Maturity
Results
Amount Due at Loan Maturity$179,084.77
Total Interest$79,084.77
Principal $100,000.00
Interest $79,084.77
Principal 55.84% · Interest 44.16%
Bond: Paying Back a Predetermined Amount Due at Maturity
Results
Amount Received When Loan Starts$55,839.48
Total Interest$44,160.52
Principal $55,839.48
Interest $44,160.52
Principal 55.84% · Interest 44.16%
How the Loan Calculator Works
Loan Calculator Overview
A loan is an agreement where a lender provides money up front and the borrower repays it over time under defined terms. In practice, most borrowing scenarios fit into three broad structures: amortized repayment, deferred lump-sum repayment, and predetermined maturity-value repayment (commonly associated with bond-style math).
Three Common Loan Structures
1) Amortized Loan: Fixed Payments Over Time
In an amortized structure, payments are made on a recurring schedule and each payment typically includes both interest and principal. Early payments generally allocate more to interest, while later payments shift more toward principal reduction. Mortgages, auto financing, student lending, and many personal loans follow this pattern.
2) Deferred Payment Loan: Lump Sum at Maturity
A deferred-payment structure postpones full repayment until maturity. Instead of steadily paying principal down each period, the balance accrues according to the contract terms and is settled in one larger payment at the end (or near the end). This format appears in some short-horizon or specialized commercial arrangements.
3) Bond-Style Maturity Value: Predetermined Payoff
In this model, the maturity amount is known in advance and present value is derived from time and rate assumptions. Zero-coupon bond mechanics are a common example: value grows toward face amount over time instead of paying periodic coupons to the holder.
Core Inputs That Drive Loan Outcomes
Interest Rate (APR vs APY context)
Rate is the cost of borrowing. APR is commonly used in lending disclosures, while APY is typically seen in deposit contexts. Borrowers should focus on effective borrowing cost across the full term, not only the advertised nominal rate.
Compounding Frequency
Compounding frequency determines how often interest is calculated on outstanding value. More frequent compounding generally increases total cost for the same nominal annual rate.
Loan Term
Term length affects both affordability and total cost. Longer terms often reduce periodic payment pressure but can materially increase cumulative interest.
Consumer Loan Basics: Secured vs Unsecured
Secured Loans
Secured borrowing uses collateral, such as a home or vehicle. Because lender risk is lower, pricing and approval odds are often more favorable compared with unsecured alternatives. However, default risk includes potential loss of the pledged asset.
Unsecured Loans
Unsecured borrowing does not attach specific collateral to the agreement. Lenders rely heavily on credit profile, debt-to-income capacity, cash flow consistency, and broader underwriting conditions. Rates are often higher and limits may be lower relative to secured products.
How to Use This Calculator Effectively
Run baseline, moderate, and stress scenarios before committing to a loan. Compare term options, compounding choices, and repayment schedules side by side. For high-impact decisions, combine calculator outputs with lender disclosures and fee breakdowns so you can evaluate true total cost instead of payment alone.
Frequently Asked Questions
What is loan amortization with an example?
Loan amortization is the process of spreading repayment across fixed periods. For example, a fixed-rate loan can require the same monthly payment each month, with early payments mostly interest and later payments mostly principal.
What is the meaning of amortization of term loan?
For a term loan, amortization means repaying the original borrowed amount over a defined timeline using structured installments, rather than repaying the full principal only at maturity.
What is the difference between an amortized loan and a straight loan?
An amortized loan repays principal gradually over the term. A straight (interest-only) structure typically pays interest during the term and leaves principal due as a lump sum at maturity unless otherwise structured.
What is deferred payment on a loan?
Deferred payment means repayment is postponed for a period, with interest potentially continuing to accrue depending on loan terms.
Is deferring a loan payment bad?
Not always. Deferral can help short-term cash flow, but it may increase total borrowing cost if interest accrues and is added to the balance.
What is the meaning of deferred payment?
Deferred payment refers to paying later instead of now, either by delaying installments or delaying principal repayment to a future date.
What is an example of a deferred payment?
A common example is a loan with a grace period where no principal is paid for several months, then regular repayment starts afterward.
Do bonds have repayment at maturity?
Yes. Standard bonds generally return principal (face value) at maturity, while paying coupon interest during the bond term when applicable.
What is it called when a bond is paid off before maturity?
It is typically called a bond redemption or bond call, depending on the bond terms and whether the issuer exercises a call feature.
How much does a bond pay at maturity?
At maturity, a bond usually pays its face (par) value, such as $1,000 per bond, in addition to any final coupon payment due.
Can bonds be paid before maturity?
Yes, some bonds are callable and can be redeemed before maturity under predefined conditions stated in the bond agreement.