Total Loan Cost Calculator - Interest, Fees, Insurance in One Number

Interest, fees, insurance - one total that tells the truth

The monthly payment on a $300,000 mortgage at 7% for 25 years is $2,120. That number tells you what leaves your account each month. It does not tell you that you will repay $636,101 in total, that $336,101 of that is interest, and that a 1% origination fee and 0.3% annual insurance push the total cost above $361,000. This calculator sums every component into one figure so you can compare offers on the number that actually matters.

Interest ($300k / 7% / 25y)

$336,101

+ 1% fee + 0.3% insurance

$25,500

Total cost above principal

$361,601

How to use this calculator

Loan amount - the net principal you are borrowing. Do not add fees here - the calculator handles them separately.

Annual rate and term - the nominal interest rate and repayment period in years. Longer terms mean lower payments but significantly more interest.

Origination fee - a one-time charge, typically 0-3% of the loan. Banks sometimes waive this for existing customers or promotional offers.

Annual insurance - expressed as a yearly percentage of the original loan. Common range: 0.2-0.5%. The calculator multiplies this by the term length.

Read the results - the total cost, the multiplier (how many times the principal you repay), and a breakdown showing how much each component contributes.

What hidden costs do to a $50,000 loan

Three versions of the same $50,000 personal loan at 8.5% for 5 years:

Version	Fee	Insurance	Total cost	Multiplier
No extras	0%	0%	$11,595	1.23x
With fee	3%	0%	$13,095	1.26x
Full package	3%	0.4%	$14,095	1.28x

The monthly payment in all three versions is $1,027. Fees and insurance are paid separately or upfront, so the monthly figure hides $2,500 in extra cost between the cheapest and most expensive version.

Mortgage cost trap

On a $300,000 / 7% / 25-year mortgage with 1% fee and 0.3% insurance, the total cost reaches $361,601. The multiplier: 2.21x - you repay more than double the borrowed amount.

Short-term advantage

A $50,000 / 9% / 3-year loan with 2% fee costs $8,197 total (1.16x). The same loan at 7 years: $17,898 (1.36x). Shorter terms save proportionally more because the fee is fixed while interest is not.

Practical examples

$200,000 at 6% for 30 years, no extras - total interest: $131,677. Multiplier: 1.66x. For every $100 borrowed, you repay $166.

$200,000 at 6% for 30 years, 2% fee + 0.3% insurance - total cost: $149,677. The fee ($4,000) and insurance ($18,000 over 30 years) add $22,000 above pure interest.

$400,000 at 7.5% for 20 years, 1% fee - interest: $373,369. Fee: $4,000. Total cost: $377,369. Multiplier: 1.94x.

$100,000 at 5% for 15 years, no extras - total interest: $42,343. Same loan over 30 years: $93,256. Doubling the term more than doubles the interest.

$30,000 personal loan at 12% for 3 years, 4% fee - interest: $5,960. Fee: $1,200. Total cost: $7,160. The fee adds 20% to the cost of borrowing.

FAQ - Frequently asked questions

What counts as "total loan cost"?

Everything you pay above the original principal: interest over the full term, the origination fee (a percentage of the loan charged at signing), and insurance premiums (annual rate multiplied by the number of years). Some loans also carry notary fees, appraisal costs or mandatory account fees - if they apply, add them to the origination fee field.

Why is the multiplier useful?

The multiplier shows how many times the original loan you repay in total. A multiplier of 1.50x means you pay back 1.5 times what you borrowed - the principal plus 50% in costs. For mortgages, multipliers of 1.8-2.2x are common. For short personal loans, 1.1-1.3x is typical. Comparing multipliers across offers instantly reveals which loan is cheaper overall.

Does the monthly payment include fees and insurance?

Usually not. The monthly payment shown here covers principal + interest only (fixed annuity formula). The origination fee is typically paid upfront or deducted from the disbursement. Insurance may be billed separately (monthly or annually) or added to the payment - check your loan agreement. This calculator sums all components into the total cost regardless of how they are collected.

How does a longer term affect total cost?

Significantly. A $300,000 loan at 7% costs $185,367 in interest over 15 years and $418,527 over 30 years - more than double. The monthly payment drops by only $700 ($2,696 vs $1,996), but the extra 15 years add $233,000 in interest. Shorter terms are always cheaper in total cost.

Is a 0% origination fee always better?

Not necessarily. Some lenders waive the fee but charge a higher interest rate. A $50,000 / 5-year loan at 7.99% with 0% fee costs $10,944 in interest. The same loan at 6.99% with a 5% fee ($2,500) costs $11,574 total. The fee-free option is cheaper by $630 despite the higher nominal rate. Always compare the total cost, not individual components.

What is the "cost per $100 borrowed" metric?

It divides the total cost by the loan amount and multiplies by 100. A result of $112 means that for every $100 you borrow, you pay $112 in interest, fees and insurance on top. This metric makes it easy to compare loans of different sizes: a $50,000 loan costing $56 per $100 is cheaper than a $300,000 loan costing $120 per $100, even though the absolute cost of the second loan is higher.

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