How to Use This Calculator
- 1
Enter Loan Details
Input the loan amount, annual interest rate, loan term in years, origination fee, annual fee, and select your payment frequency (monthly, bi-weekly, or weekly).
- 2
Review Total Cost Breakdown
See total loan cost, periodic payment, total interest, total fees, and extra cost ratio. The Insights panel shows first payment principal/interest split, crossover year, and fee impact analysis.
- 3
Use the Amortization Schedule
The chart shows balance and cumulative interest over time. The table breaks down each year's payment, principal, interest, remaining balance, and cumulative interest paid.
Example Calculation
A borrower takes out a $100,000 loan at 5% annual interest over 30 years, with a $1,000 origination fee and a $50 annual fee, making monthly payments.
Loan Amount
$100,000
Annual Interest Rate
5%
Loan Term
30 years
Origination Fee
$1,000
Annual Fee
$50
Payment Frequency
Monthly
Results
Total Loan Cost
$195,755.78
Periodic Payment
$536.82
Total Interest Paid
$93,255.78
Total Fees
$2,500
Extra Cost Ratio
95.8%
Insights card shows first payment split ($120.
Tips
Focus on the Extra Cost Ratio
The extra cost ratio shows how much you pay in interest and fees per dollar borrowed. At 95.8%, a $100,000 loan costs nearly $96,000 in extras. Shorter terms or lower rates dramatically reduce this ratio.
Negotiate Origination Fees
Origination fees are often negotiable. On a $100,000 loan, reducing the origination fee from $2,000 to $1,000 saves $1,000 upfront — a direct dollar-for-dollar reduction in total cost.
Compare Fee Structures Across Lenders
Two lenders may offer the same rate but different fee structures. A loan with no origination fee but a $100/year annual fee costs $3,000 over 30 years, while a $2,000 origination fee with no annual fee costs $2,000 total.
Understanding Total Loan Cost with Fees
The Amortized Loan Cost Calculator shows the full cost of borrowing by combining principal, interest, and fees into a single total.
Enter your loan details to see the periodic payment, total interest, fee impact, and a complete yearly amortization schedule.
The Insights panel breaks down the first payment into principal and interest, identifies the crossover year when principal starts exceeding interest, and quantifies how fees affect your total cost.
How the Calculator Works
The periodic P&I payment uses the standard amortization formula:
Payment = P x [i(1 + i)^n] / [(1 + i)^n - 1]
Where P is the loan amount, i is the periodic interest rate (annual rate / payment frequency), and n is the total number of payments (years x frequency).
Fees are tracked separately — the origination fee is a one-time upfront cost, and annual fees accumulate over the loan term.
Total loan cost = total P&I payments + origination fee + (annual fee x years).
Worked Example: $100,000 Loan at 5% Over 30 Years
A borrower takes out a $100,000 loan at 5% annual interest, 30-year term, with a $1,000 origination fee and $50 annual fee, paying monthly.
Setup:
- Monthly rate: 5% / 12 = 0.4167%
- Monthly payment: $536.82 (P&I only)
- First payment: $416.67 interest + $120.15 principal
Summary:
- Total Loan Cost: $195,755.78 ($100,000 principal + $93,255.78 interest + $2,500 fees)
- Total Interest Paid: $93,255.78 (93.3% of principal)
- Total Fees: $2,500 ($1,000 origination + $50/yr x 30 years)
- Extra Cost Ratio: 95.8% — you pay $0.96 in extras for every $1 borrowed
- Crossover Year: Year 17 — principal exceeds interest in annual payments
How Fees Affect Total Loan Cost
Fees are a fixed cost layered on top of interest.
Here's how different fee structures change the total cost on a $100,000 loan at 5% over 30 years:
| Origination Fee | Annual Fee | Total Fees | Total Loan Cost | Extra Cost Ratio |
|---|---|---|---|---|
| $0 | $0 | $0 | $193,255.78 | 93.3% |
| $1,000 | $0 | $1,000 | $194,255.78 | 94.3% |
| $1,000 | $50 | $2,500 | $195,755.78 | 95.8% |
| $2,000 | $100 | $5,000 | $198,255.78 | 98.3% |
| $3,000 | $150 | $7,500 | $200,755.78 | 100.8% |
At $3,000/$150, the extra cost ratio crosses 100% — you pay more in interest and fees than the original loan amount.
Fees add $0 to $7,500 in this range, but the interest rate drives the bulk of the cost.
The First Payment Split and Crossover Year
In a standard amortizing loan, early payments are interest-heavy and shift toward principal over time:
- Year 1: $1,475 principal / $4,966 interest (22.9% principal)
- Year 10: $2,312 principal / $4,130 interest (35.9% principal)
- Year 17: $3,278 principal / $3,164 interest — crossover year
- Year 25: $4,886 principal / $1,556 interest (75.9% principal)
- Year 30: $6,271 principal / $171 interest (97.3% principal)
The crossover year matters because before it, most of your payment services interest rather than building equity.
Shorter loan terms have earlier crossover years — a 15-year loan at 5% crosses over around year 6.
Frequently Asked Questions
What is the difference between interest rate and effective interest rate?
The interest rate is the nominal annual rate charged on the principal. The effective interest rate incorporates all fees and costs (origination fees, annual fees) to show the true total cost of borrowing as a percentage of the loan amount. The effective rate is always higher than the nominal rate when fees are involved.
How do origination fees affect my total loan cost?
Origination fees are one-time charges, typically 0.5-1.5% of the loan amount. While they may seem small, they add directly to your total borrowing cost. A $2,000 origination fee on a $200,000 loan effectively raises your cost by 1%, which can represent meaningful money over 30 years.
Why is the first payment mostly interest?
Your first payment calculates interest on the entire original loan balance. Since no principal has been paid yet, the balance is at its maximum and generates the most interest. Over time, as principal is paid down, the interest portion shrinks and the principal portion grows.
Should I choose a loan with lower fees or a lower interest rate?
It depends on how long you keep the loan. Lower fees benefit short-term borrowers because fees are paid upfront. A lower interest rate benefits long-term borrowers because the rate savings compound over many years. Use this calculator to compare total costs for different scenarios.