Simple Interest (Byaj)

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Principal Amount

₹

₹1,000₹1,00,00,000

Interest Rate

0.1%50%

Time Period

1120

Rate Per

Time Unit

Principal

₹1,00,000

Total Interest

₹12,000

Effective Annual Rate

12.00%

Total Repayment₹1,12,000

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Principal

Interest

Total₹1,12,00011% returns

Month-by-month byaj schedule

Month	Byaj This Month	Total Byaj So Far	Total Due (with principal)
1	₹1,000	₹1,000	₹1,01,000
2	₹1,000	₹2,000	₹1,02,000
3	₹1,000	₹3,000	₹1,03,000
4	₹1,000	₹4,000	₹1,04,000
5	₹1,000	₹5,000	₹1,05,000
6	₹1,000	₹6,000	₹1,06,000
7	₹1,000	₹7,000	₹1,07,000
8	₹1,000	₹8,000	₹1,08,000
9	₹1,000	₹9,000	₹1,09,000
10	₹1,000	₹10,000	₹1,10,000
11	₹1,000	₹11,000	₹1,11,000
12	₹1,000	₹12,000	₹1,12,000

Simple byaj: the same interest accrues every month on the original principal.

What is Simple Interest (Byaj)?

Simple Interest (also called Byaj or Saadha Vyaj in Hindi/Gujarati) is the most straightforward method of calculating interest on a loan or deposit. It is computed only on the original principal — not on accumulated interest — making it easy to understand and verify. The formula is: Interest = (Principal × Rate × Time) / 100.

How to use VyajPay's Simple Interest (Byaj)?

VyajPay's Simple Interest calculator supports daily, monthly, and yearly interest rates — matching the way informal lenders actually charge byaj in India. Enter your loan principal, set the rate (e.g. 1% per month), and set the duration (e.g. 12 months). The calculator instantly shows total interest and the full repayable amount.

Adjust the sliders or type values to match your scenario.

Watch the donut chart update live — blue arc = your returns.

Read the result summary below the inputs for the final numbers.

Why use VyajPay's Simple Interest (Byaj)?

Supports per-day, per-month, and per-year rate input — just like real Indian lending

Instantly converts any rate to effective annual rate for transparency

Ideal for mahajans, finance companies, and individuals lending to friends or family

No sign-up required — free to use for unlimited calculations

Frequently Asked Questions

Simple interest is calculated only on the original principal, so it stays flat. Compound interest is calculated on the growing balance (principal + accumulated interest), causing it to grow faster over time.

Multiply the monthly rate by 12. For example, 1% per month = 12% per annum (simple interest basis).

Yes. For borrowers, simple interest always results in a lower total repayment than compound interest for the same rate and tenure.

Absolutely. VyajPay's simple interest calculator is specifically designed for informal lending in India, supporting daily and monthly rates that are common in such transactions.