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Desi Byaj Calculator (rupees per hundred per month)

Work out the “2 rupees per hundred” style interest used in villages and markets. Enter the amount, the rate per hundred and the months.

Quick answer

₹50,000 at 2 rupees per hundred, 8 months: interest ₹8,000.

How it is calculated

  1. “2 rupees per hundred” means ₹2 interest on every ₹100 each month.
  2. Interest = amount × rate × months ÷ 100 = 50,000 × 2 × 8 ÷ 100 = 8,000.
  3. Yearly rate = rate per hundred × 12, so 2 per hundred = 24% a year.

Worked example

₹50,000 lent at 2 rupees per hundred a month for 8 months. Interest ₹8,000, to return ₹58,000. The yearly rate is 24 %.

Example values
Amount lent₹50,000
Rupees per 100 per month₹2
Months8
Result
Interest₹8,000
Total to return₹58,000
Yearly rate24 %
Formula
Interest = A×R/100×Mo
Total to return = A+A×R/100×Mo
Yearly rate = R×12

Good to know

Questions people ask

What does rupees per hundred mean?

How many rupees of interest on every ₹100 each month; 2 per hundred = ₹2 on ₹100 a month.

What percent is 2 rupees per hundred?

2% a month, i.e. 24% a year.

How about interest for days?

Divide the days by 30 to get months, e.g. 45 days = 1.5 months.

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Updated 13 Nov 2026 · Desktop N Calculator v1.2.0