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Calculate SME revolving credit

Calculate SME working capital interest, annual cost and effective rate including fees.

Credit/DebitVerifiable formulaYou can save and share results.

SME Revolving Credit Calculator

The SME Revolving Credit Calculator estimates a loan and interest estimate for your scenario from the quantities, rates, period, units and other assumptions requested on the page. Replace the example values with your own sme revolving credit figures and recalculate after changing an assumption. Use it to compare scenarios, then verify any current rate or fee before acting.

Calculate monthly interest, annual cost, and actual interest rate including fees for a SME revolving credit line.

How to calculate the cost of SME loans

Revolving funds loans for SMEs charge interest on a daily basis on actual drawdowns, making them more flexible than long-term fixed-income loans.

Calculations

  • Daily interest = actual amount spent × (interest rate per year ÷ 365)
  • Interest per number of days = Daily interest x Number of days
  • Annual cost = amount spent × annual interest rate + fees
  • Actual rate = (annual cost ÷ actual amount spent) × 100%

example

The amount 1,000,000 baht applied 700,000 baht MOR 7.5% Fees 5,000 baht/year:

  • Daily interest = 700,000 × 7.5% / 365 = 143.84 baht/day
  • Interest 30 day = 4,315 baht
  • Total annual cost of the fee = 52,500 + 5,000 = 57,500 baht
  • Actual rate = 57,500 / 700,000 = 8.21% per year

How to reduce the cost of SME loans

  • Use the amount you need, pay back quickly to reduce daily interest.
  • Compare the MORs of several banks, they may differ by 1-2%.
  • Check for commitment fees for unused amounts.
  • Consider guarantees through the B. S. I. for better interest rates.

Frequently asked questions

What is a SME loan with a working capital?
Revolving credit lines are funds that the bank approves for SMEs to draw on demand, pay interest only on the amount actually used, similar to business credit cards, suitable for short-term liquidity, such as taking large orders before receiving money.
What are MOR and MLR?
The MOR (Minimum Overdraft Rate) is the minimum interest rate for overdraft accounts. The MLR (Minimum Loan Rate) is the minimum interest rate for long-term loans. Each commercial bank sets it differently. Currently it is around 6.5-8.5% per year.
What is the annual fee for SME loans?
Common fees include a commitment fee of approximately 0.5-1% of unused amount per year, credit management fees and insurance fees should be included in the calculation of the actual cost.
How much can a SME borrow?
The amount depends on the sales and financial statements of the business. Generally, banks provide no more than 25-30% of annual sales or cash flow. Some banks have special SME programs through BSY (Industrial Small Credit Insurance Institution) to guarantee.

Official reference source

Disclaimer: The results of the calculation are preliminary estimates only. The actual MOR/MLR interest rate and fees depend on the policies of each financial institution and are not financial advice. Please check the terms directly with the bank.

English calculator guide

How to use the SME Revolving Credit Calculator

Use this page to test a specific sme revolving credit scenario. Enter your own values in the calculator above, review the units beside each field, and recalculate after changing an assumption. The result updates the sme revolving credit estimate instead of relying on a generic example.

  1. Build a baseline sme revolving credit case with figures that match your situation.
  2. Run a second sme revolving credit case after changing the rate, period, quantity or other key assumption.
  3. Record the difference between the two sme revolving credit results and the input responsible for it.

Inputs for the sme revolving credit estimate

For this sme revolving credit calculation, check the quantities, rates, period, units and other assumptions requested on the page. The result is designed to show a loan and interest estimate for your scenario, not a guaranteed provider price or official decision.

How the sme revolving credit result is calculated

The calculator models principal, interest, repayment timing and term using the assumptions shown on the page. Reusing the same sme revolving credit inputs will produce the same estimate, which makes the page suitable for controlled scenario comparisons.

Checks for a sme revolving credit decision

Confirm any current rate, threshold or provider rule that could change the final amount. For sme revolving credit, Use the result to compare affordability, not as a lending offer. Check the lender’s effective rate, fees, insurance, payment schedule and approval conditions before committing. Check the important inputs and any current provider or authority rules before using the result for a decision.

Language QA
Terminology, numeric values and calculator controls checked
Calculator scope
Loan and interest
Last English review
26 July 2026

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