EIDL Loan Calculator
SBA Repayment Analysis
What Is an EIDL Loan Calculator?
An EIDL Loan Calculator is a tool that estimates your monthly loan payment and interest costs based on SBA loan terms, including deferment periods and fixed interest rates.
It solves a common problem: many borrowers don’t realize how deferment affects total interest or how long-term amortization works. This calculator uses a standard 30-year repayment schedule and shows both your fixed monthly payment and the interest that builds up during deferment.
It is especially useful for small business owners, nonprofits, and anyone managing SBA disaster loans who wants to plan cash flow, avoid surprises, and understand long-term repayment obligations.
How the EIDL Loan Formula Works
The calculator uses a standard loan amortization formula to compute monthly payments over a fixed 30-year term (360 months).
Here’s what each variable means in plain English:
- P = Loan amount (principal)
- r = Monthly interest rate (annual rate ÷ 12)
- n = Total number of payments (360 months)
- PMT = Monthly payment
For deferment, the calculator uses simple interest instead of compounding:
Where t is time in years (deferment months ÷ 12).
Example:
Let’s say you borrow $150,000 at 3.75% with a 30-month deferment.
- Monthly rate = 3.75% ÷ 12 = 0.003125
- Term = 360 months
- Monthly payment ≈ $695
- Deferred interest = 150,000 × 0.0375 × (30 ÷ 12) = $14,062.50
That deferred interest is not added to the principal but must still be paid. Payments first go toward this interest, which can lead to a large final balance if not managed early.
If the interest rate is 0%, the formula simplifies to principal divided by total months.
How to Use the EIDL Loan Calculator: Step-by-Step
- Enter your total loan amount in dollars.
- Select your organization type (for-profit or nonprofit).
- Adjust the interest rate if needed or use the default.
- Enter your deferment period in months.
- Click “Calculate Loan” to see your results.
The calculator will show your fixed monthly payment and the total interest accrued during deferment. The monthly payment stays the same for 30 years, but the deferred interest must still be paid. If you don’t pay it early, it can create a large remaining balance at the end of the loan.
Real-World Use Cases and Key Insights
Understanding Deferment Impact
Many borrowers assume deferment means “free time,” but interest still builds. This calculator shows the true cost of delaying payments, which can reach thousands of dollars.
Planning Cash Flow
Knowing your exact monthly payment helps you budget. A fixed payment over 30 years makes planning easier, especially for businesses with steady revenue.
Avoiding Balloon Payments
If you only pay the standard amount after deferment, unpaid interest can linger. This may result in a large final payment at the end of the loan term.
Comparing Loan Scenarios
You can test different loan amounts, rates, and deferment periods to see how each affects your payment and total cost. This makes it easier to make informed decisions.
Frequently Asked Questions
How is an EIDL monthly payment calculated?
An EIDL monthly payment is calculated using a fixed amortization formula over 30 years. It factors in the loan amount, interest rate, and total number of payments to produce a consistent monthly amount.
Does interest accrue during EIDL deferment?
Yes, interest accrues during deferment using simple interest. Even though you are not making payments, the interest builds and must be paid later.
Is deferred interest added to the loan balance?
No, deferred interest is not capitalized into the principal. However, it must still be paid, and your payments will go toward it first.
What happens after the deferment period ends?
Once deferment ends, you begin making fixed monthly payments. These payments first cover any accrued interest before reducing the principal.
Can I pay off EIDL interest early?
Yes, you can make payments during deferment to reduce or eliminate accrued interest. This can help avoid a large balance later.
What is the standard EIDL loan term?
The standard EIDL loan term is 30 years (360 months). This long term keeps monthly payments lower but increases total interest paid over time.