Finance

Business Loan Total Interest Calculator (25 Years)

Estimate total interest paid over a loan. This business version uses a 25-year planning term as its starting point.

In plain terms, the total interest is the extra cost of borrowing beyond the amount borrowed, and the total paid is the amount borrowed plus that interest over the full 25-year term.

Formula

Total interest equals monthly EMI times number of payments minus the principal.

How it works

A longer term lowers the monthly payment but raises total interest.

Worked example

Loan amount $200,000, annual rate 6.5%, term 25 years. The monthly rate is 6.5% divided by 12, which is 0.0054167, and the number of payments is 25 times 12, which is 300. Using the EMI formula, the monthly payment is $1,350.41. Over 300 payments the total paid is $405,124.30. Total interest is $405,124.30 minus $200,000, which is $205,124.30. That is 102.6% of the amount borrowed, so the total interest alone is now larger than the original loan.

Who this term suits for a business: A 25-year term suits only a business borrowing for a genuinely long-lived asset, for example a firm buying freehold premises it expects to trade from for a generation. The payment of $1,350.41 a month looks affordable, but $205,124.30 in total interest means the business pays back more than double the amount borrowed, and the premises, the market and the owners will all change several times during 300 payments.

FAQs

Why does a longer loan cost more interest?
More payments mean interest is charged for longer, so total interest rises even if each payment is smaller.

Is this business calculator exact?
No, it is an estimate for planning only, based on the numbers you enter.

Are these figures financial advice?
No, they are estimates for planning only, not financial advice. Check with a qualified adviser for decisions involving large sums.

Why does total interest pass the loan amount at 25 years?
Because there are 300 monthly payments. Each payment of $1,350.41 looks modest, but 300 of them add up to $405,124.30, and $205,124.30 of that is interest. Once the term passes about 25 years at 6.5%, interest overtakes the principal itself.

Is a 25-year business loan realistic?
Only against a very long-lived asset such as freehold property. For machinery, vehicles or fit-out that will be replaced long before 25 years, it is not realistic: the business would still be paying interest on an asset it no longer owns.

What exit plan should a 25-year borrower have?
A plan to repay early from profits, sell the asset, or refinance on better terms, with the prepayment fees checked in advance. Without an exit plan, the business is locked into $1,350.41 a month for 300 months regardless of how trading changes.

Estimates only, not financial advice. Figures are approximate and do not include all fees, taxes, or changing rates unless stated.