Loan Calculator

Amortized Loan

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Amortized Loan Results

Deferred Payment Loan

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Deferred Payment Loan Results

Bonds

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Bond Result

Loan Calculator – Estimate Payments, Total Interest & Repayment Schedule

A loan calculator helps you estimate how much you’ll pay for a loan over time — including your payment amount, total interest, and total repayment. This page supports multiple loan styles: Amortized loans (regular payments), Deferred payment loans (pay at maturity), and Bonds (present value / amount received today for a future due amount).

Use this tool to compare interest rates, terms (years + months), payment frequency, and down payment effects — and to view/download a schedule or PDF report.

Table of Contents

How This Loan Calculator Works

This calculator uses standard finance formulas to estimate repayment based on your inputs. Depending on the loan type you choose, it will compute:

  • Payment amount (for amortized loans) based on your repayment frequency.
  • Total interest paid (or earned/accumulated in deferred/bond scenarios).
  • Total payments and schedule tables showing how balances change over time.
Key idea: Interest cost depends heavily on the interest rate, loan term, and how often you repay. Even small changes can significantly impact total repayment.

Loan Types: Amortized, Deferred & Bonds

Amortized Loan

Regular payments over time (monthly/biweekly/etc.). Each payment is split into interest + principal. Your balance decreases until it reaches zero.

Deferred Payment Loan

No periodic payments. Interest accrues over the term, and the full amount is due at maturity (principal + accumulated interest).

Bonds (Present Value)

Given a future “due amount” (face value), the calculator estimates how much you would receive today based on interest rate, term, and compounding.

These are educational estimates; real products may include fees, compounding conventions, and rounding differences.

Inputs Explained: Amount, Rate, Term, Compounding & Payback Frequency

  • Loan Amount: The amount you borrow (or the face value for bonds / due amount at maturity).
  • Down Payment (Amortized only): Reduces the borrowed principal. A higher down payment usually lowers total interest.
  • Loan Term (Years + Months): Longer terms usually reduce each payment but increase total interest.
  • Interest Rate (%): A major driver of cost. Small changes can add or save a lot over time.
  • Compound Frequency: How often interest is compounded (monthly, daily, continuously, etc.).
  • Pay Back Frequency (Amortized): How often you make payments (monthly, biweekly, weekly, etc.). More frequent payments can reduce total interest in many cases.

Tip: Compare multiple scenarios

Try the same loan amount with different rates, terms, or payback frequencies to see trade-offs between affordability (payment size) and total cost (total interest).

Amortized Loan: Payment, Total Interest & Amortization Schedule

Amortized loans are the most common type (mortgages, auto loans, many personal loans). You repay with regular payments over time. Each payment includes:

  • Interest portion: Cost of borrowing based on your remaining balance.
  • Principal portion: Amount that reduces the balance.
Why early payments feel “interest-heavy”: interest is calculated on a larger balance at the start. Over time, the balance drops, and more of each payment goes toward principal.

The amortization table shown above is a helpful estimate for planning and comparison.

Deferred Payment Loan: Amount Due at Maturity

In a deferred payment loan, you don’t pay periodically. Instead, interest accrues over time, and the full amount due is paid at the end of the term.

What you’ll see in results

  • Amount Due: principal + accumulated interest.
  • Total Interest: the added cost over the term.
  • Schedule table: how the balance grows year-by-year.

When it’s useful

Deferred models can help estimate the future value of a borrowed amount or a lump-sum repayment plan. Always check real loan terms and fees.

Bond Calculator: Amount Received Today (Present Value)

Bonds (or similar instruments) can be viewed as the reverse of a deferred payoff: you have a future amount (face value) and want to know how much it’s worth today. This calculator estimates the amount received based on term, interest rate, and compounding.

What affects the amount received?

  • Higher interest rate → lower present value (you’d receive less today).
  • Longer term → lower present value (more discounting over time).
  • More frequent compounding can slightly change the result.

A Real-Style Scenario: Comparing Loan Options

Rahul is planning to take a loan and wants to understand the real cost before choosing a lender. He compares:

  • Option A: Lower interest rate but longer term (smaller payments, higher total interest).
  • Option B: Slightly higher payment frequency or shorter term (higher payment, lower total interest).

After checking the total interest + repayment schedule, he chooses the plan that fits his monthly budget while keeping total cost reasonable.

Example scenario for education only. Always verify with your lender and read the full loan terms.

FAQs – Loan Calculator

1. Why is my lender’s payment different from this calculator?

Differences can happen due to fees, rounding, compounding conventions, payment posting rules, and real-world loan conditions. This calculator provides estimates for planning and comparison.

2. Does paying more frequently reduce interest?

Often it can, because principal is reduced sooner across the year. But results depend on your loan terms and how interest is calculated.

3. What’s the benefit of a bigger down payment?

A larger down payment reduces the amount you borrow, which usually lowers your payment and total interest.

4. What does “compound frequency” mean?

It’s how often interest is added to the balance (monthly, daily, continuously, etc.). Different compounding can change the final amount due.

5. Is this calculator good for personal loans, auto loans, and mortgages?

Yes for general estimates. For mortgages specifically, consider taxes/insurance/PMI as additional monthly costs (use the Mortgage Calculator page for that).

6. Does this include origination fees or processing charges?

No. Many loans include fees that affect APR and real cost. Use this as an estimate, then confirm with lender disclosures.

About This Loan Calculator

  • Estimates amortized payments + amortization schedule.
  • Calculates deferred payoff amount at maturity.
  • Calculates bond present value (amount received today).
  • Downloadable PDF summaries and schedules.
  • Last updated: 2/4/2026

Financial Disclaimer

This loan calculator is for educational and informational purposes only and does not provide financial, legal, tax, or investment advice. Results are estimates and may differ from actual lender schedules due to fees, escrow rules, rounding, compounding conventions, and loan-specific terms. Always confirm details with your lender or a qualified professional.

Loan Tips

  • A larger down payment reduces your monthly payment and total interest
  • Shorter loan terms mean higher monthly payments but less total interest
  • Even a 0.5% difference in interest rate can save thousands over the loan term
  • Consider making extra payments toward principal to reduce total interest

Common Loan Types

Mortgage Loans

Typically 15-30 years, secured by the property

Auto Loans

Usually 3-7 years, secured by the vehicle

Personal Loans

Typically 2-5 years, often unsecured

Student Loans

Usually 10-25 years, various repayment options