What Is Amortization? Meaning, Importance & Examples
Chapter 1

What is Amortisation? Meaning, Formula & Examples


Apr 8, 2026

What is Amortisation? Meaning, Formula & Examples

Amortisation is the process of repaying a loan over time through fixed, periodic instalments that cover both principal and interest. It plays a crucial role in shaping how borrowers manage long-term financial commitments, especially when dealing with loans that extend over several years. Instead of facing the burden of a lump sum repayment, individuals can rely on a structured system that breaks down the total loan into predictable payments. This approach not only ensures disciplined repayment but also provides clarity on how much is being paid toward interest and principal at every stage. By understanding amortisation meaning and its practical application, borrowers can make more informed decisions, plan their cash flows efficiently, and gain better control over their overall financial journey.


What is Amortisation?

Amortisation is the systematic repayment of a loan over a fixed period through regular instalments. Each payment includes two components: interest on the outstanding balance and a portion of the principal amount. Over time, the interest portion gradually decreases, while the principal repayment increases. In finance, amortisation also refers to the gradual reduction of a loan or an intangible asset’s value through periodic payments or accounting adjustments, helping borrowers clear their debt in a structured and predictable manner.

Where Amortisation is Used

Amortisation is commonly used in several financial situations, including:

  • Home loans or mortgages
  • Personal loans and car loans
  • Business loans
  • Accounting for intangible assets such as patents or copyrights
  • Student loan repayment schedules


How Amortisation Works

Amortisation is based on the principle of splitting the loan repayment into equal instalments during a specific time. These payments will be paid in parts until the loan balance remains zero at the expiry of the tenure.

Amortisation Schedule Explanation

An Amortisation schedule is a table which indicates the breakdown of all loan payments in details. It typically includes:

  • Payment number
  • Total payment amount
  • Interest portion
  • Principal portion
  • Remaining loan balance

Such a schedule enables the borrowers to know the amount of each payment that is allocated to interest and the amount that is subtracted off the loan principal.


Principal vs Interest in Amortising

The payment of every loan is made in two parts:

  • Principal: It is the initial sum borrowed by the lender.
  • Interest: This is the amount the borrower has to pay for availing the capital.

During the initial stages of a loan, more payment is made as interest. The longer the loan maturity, the higher the proportion of the instalment used on the principal.

Amortisation Schedule Explained

An Amortisation schedule is a table that shows the detailed breakdown of each loan payment over time. It typically includes:

  • Payment number
  • Total payment amount
  • Interest portion
  • Principal portion
  • Remaining loan balance

This schedule allows borrowers to track how much of each payment goes toward interest and the loan principal.

Principal vs Interest in Amortisation

Each loan payment consists of two parts:

  • Principal: The original amount borrowed from the lender
  • Interest: The cost paid to the lender for borrowing the capital.

In the early stages of a loan, a larger portion of the payment goes toward interest. As the loan progresses, more of the payment is applied to the principal.


Amortisation Formula

The standard formula used to calculate the periodic loan payment in an amortised loan is:

Payment = P × r × (1 + r)ⁿ / [(1 + r)ⁿ − 1]

Where:

  • P = Loan principal
  • r = Periodic interest rate
  • n = Total number of payments

This formula helps determine the fixed payment amount required to repay the loan over a specific period.


Importance of Amortisation

Amortisation is very useful in financial planning because it offers an outline for loan repayment and helps individuals comprehend their financial obligations.

Helps in Loan Repayment Planning

Amortisation helps individuals better plan their financial affairs. This is because individuals can pay loans in installments and can thus better organize their financial affairs.

Transparency in Loan Payments

An Amortisation schedule provides transparency by showing exactly how each payment is allocated between interest and principal. This clarity helps borrowers understand the true cost of their loan.


Example of Amortisation

Amortisation can be better understood through practical examples of loan repayment.

Home Loan Amortisation Example

Consider a home loan of ₹20,00,000 taken for 20 years with a fixed interest rate. The borrower pays a fixed monthly instalment throughout the loan tenure. Initially, most of the payment goes toward interest, but over time a larger portion goes toward reducing the outstanding principal balance.

Sample Amortisation Schedule

Here is a sample Amortisation schedule. Let’s assume:

Loan Amount: ₹1,00,000

Interest Rate: 10% per annum

Tenure: 12 months

Repayment: Equal Monthly Instalments (EMIs)

Here’s a clear sample amortisation schedule to illustrate how loan repayments are structured over time. Let’s assume:

  • Loan Amount: ₹1,00,000
  • Interest Rate: 10% per annum
  • Tenure: 12 months
  • Repayment: Equal Monthly Instalments (EMIs)

Month 

Opening Balance 

EMI (₹) 

Interest (₹) 

Principal (₹) 

Closing Balance 

1 

1,00,000 

8,793 

833 

7,960 

92,040 

2 

92,040 

8,793 

767 

8,026 

84,014 

3 

84,014 

8,793 

701 

8,092 

75,922 

4 

75,922 

8,793 

633 

8,160 

67,762 

5 

67,762 

8,793 

564 

8,229 

59,533 

6 

59,533 

8,793 

496 

8,297 

51,236 

7 

51,236 

8,793 

427 

8,366 

42,870 

8 

42,870 

8,793 

357 

8,436 

34,434 

9 

34,434 

8,793 

287 

8,506 

25,928 

10 

25,928 

8,793 

216 

8,577 

17,351 

11 

17,351 

8,793 

145 

8,648 

8,703 

12 

8,703 

8,793 

73 

8,720 

0 


Advantages and Limitations of Amortisation

Amortisation offers several benefits but also has certain limitations.

Advantages

  • Provides a clear and structured repayment plan
  • Helps borrowers track loan balance over time
  • Allows predictable and fixed periodic payments
  • Improves financial planning and budgeting

Limitations

  • Higher interest payments during the initial years
  • Long loan tenures may increase the total interest paid
  • Limited flexibility if borrowers want to change payment terms


Amortisation vs Depreciation

Amortisation and depreciation are similar concepts but are used in different contexts.

  • Amortisation is used for paying off debts or reducing the value of intangible property like patents or trademarks.
  • Depreciation is the gradual reduction of the value of a tangible asset like machinery, a car, or a building due to wear and tear over a period of time.

Both methods allocate costs over time but apply to different types of assets.


Conclusion

Amortisation is a very critical financial term that enables borrowers to know how loans can be paid in the form of organised payments. Amortisation makes loan balances and repayment statuses clear since repayments are divided into principal and interest portions. Understanding amortisation, its formula and repayment schedules can assist individuals to better plan their finances and have more confidence in long-term loans like house loans or personal loans.

FAQs on What is Amortisation


What is an amortisation schedule?

An amortisation schedule is a table which indicates how each payment on the loan is broken down. It shows the proportions of each payment as interest and the proportions of each payment as a decrease in the outstanding principal amount.


How does amortisation work?

Amortisation is a method that involves breaking down a loan into periodic payments over a certain period of time. Every fee has got an interest and a part of the principal and the loan balance is decreasing slowly.


What types of loans use amortisation?

Some of the loans that are usually amortised include home loans, car loans, personal loans and certain business loans. These loans are repaid by making instalment payments on a regular basis.


What is the difference between amortisation and depreciation?

Amortisation is the process of settling loans or depreciation of intangible assets. Depreciation means the decrease in the value of physical assets such as machinery or vehicles.


Why is amortisation important for borrowers?

The amortisation process also allows the borrower to have a clear picture of how their loan will be repaid and the process of reducing the loan balance with time. It also aids in more effective financial planning and budgeting.


Can a loan be paid off early in an amortisation schedule?

Yes, borrowers are able to pay a loan sooner than the lender expects. Not all loans, however, are without prepayment fees or penalty.


Does amortisation affect interest payments?

Yes, during the initial years of payment, a higher percentage of the payment can be allocated towards interests payment. The interest amount lessens with time and the principal payout grows.

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