What is interest on drawings formula?

In a partnership firm, the partners may withdraw certain amounts from the firm for their personal use. Such amounts withdrawn by the partners are called drawings. This amount is usually deducted from their capital. The partners are required to pay an amount as interest, based on the time period for which the money was withdrawn. This amount is called Interest on Drawings.

The journal entry for interest on drawings is as follows:

Since interest on drawings is an income to the firm, it is credited based on the rule that “increase in incomes are credited”. Since the partner has to bear the interest amount, his capital account is debited as a “ decrease in capital is debited”.

FORMULAS

The basic formula for interest on drawings is:
Interest on drawings = Amount of Drawings x Rate/100 x No. of months/12

1. When equal amounts of drawings are withdrawn at the beginning of every month, then
   Interest on Drawings = Total Drawings x Rate/100 x (12+1)/2
2. When equal amounts of drawings are withdrawn at the end of every month, then the Interest on Drawings = Total Drawings x Rate/100 x (12-1)/2
3. When the date of the drawing is not specified, it is assumed to be withdrawn evenly. Hence Interest on Drawings = Total Drawings x Rate/100 x 6/12

The calculations in 1,2 and 3 are done so that drawings can be calculated for the average period.

EXAMPLE

Jack is a partner who withdrew $20,000 on 1st April 2020. Interest on drawings is charged at 10% per annum. If we have to calculate interest on drawings as of 31st December, then

Interest on Drawings = 20,000 x 10/100 x 9/12 = $1,500
(Here, interest on drawings is outstanding for 9 months, that is from April to December)