Negative Amortization Loan Calculator

Negative amortization occurs when a borrower's principal balance increases over time rather than decreasing. This typically happens with interest-only loans or when the interest rate exceeds the amortization rate. Our calculator helps you understand and analyze negative amortization scenarios.

What is Negative Amortization?

Negative amortization is a financial situation where the principal balance of a loan grows over time rather than shrinking. This occurs when the interest payments exceed the amount being applied to the principal each period.

Negative amortization is most commonly seen with interest-only loans, where only the interest is paid each month, and the principal remains unchanged. Over time, the interest payments grow as the principal increases, creating a situation where the loan balance grows rather than shrinks.

Negative amortization is different from negative amortization in accounting, which refers to a situation where a company's assets are worth less than its liabilities.

How Negative Amortization Works

The process of negative amortization can be broken down into several key steps:

Initial Loan Balance: The loan starts with a principal amount.
Interest Accrual: Interest is calculated on the current principal balance.
Payment Application: The total payment (principal + interest) is applied to the loan.
Principal Adjustment: If the interest payment exceeds the principal payment, the principal balance increases.
Repeat Process: This cycle continues each period, causing the principal balance to grow.

Principal Growth = (Interest Rate × Current Principal) - Principal Payment

Over time, this process leads to a situation where the loan balance grows rather than shrinks, requiring the borrower to make larger payments to cover the increasing interest.

How to Use This Calculator

Our negative amortization loan calculator is designed to be simple and intuitive. Follow these steps to use it effectively:

Enter Loan Details: Input the initial loan amount, interest rate, and loan term.
Set Payment Options: Choose whether you want to make interest-only payments or include principal payments.
Calculate Results: Click the "Calculate" button to see the loan amortization schedule.
Analyze Results: Review the chart and detailed breakdown of payments and principal balance.
Adjust as Needed: Change inputs to see how different scenarios affect the loan balance.

The calculator will show you how the loan balance changes over time, helping you understand the impact of negative amortization.

Example Calculation

Let's look at an example to illustrate how negative amortization works. Suppose you take out a $100,000 loan with a 6% annual interest rate. If you only pay the interest each month, here's what happens:

Month	Starting Balance	Interest Payment	Total Payment	Ending Balance
1	$100,000.00	$500.00	$500.00	$100,500.00
2	$100,500.00	$502.50	$502.50	$101,002.50
3	$101,002.50	$505.01	$505.01	$101,507.51

As you can see, the loan balance grows each month because the interest payments exceed the principal payments. This is a clear example of negative amortization.

FAQ

What is the difference between negative amortization and positive amortization?

Positive amortization occurs when the principal balance decreases over time, while negative amortization occurs when the principal balance increases. Positive amortization is typical for most loans, while negative amortization is common with interest-only loans.

Can negative amortization be avoided?

Yes, negative amortization can be avoided by making larger payments that include both principal and interest, or by refinancing the loan to a lower interest rate.

What are the risks of negative amortization?

The main risk of negative amortization is that the loan balance grows over time, requiring larger payments to cover the increasing interest. This can lead to financial strain for the borrower.

Is negative amortization legal?

Yes, negative amortization is legal and occurs when the interest payments exceed the principal payments. It's important to understand the implications before taking out a loan with negative amortization.