I have multiple monthly support contracts with always the same payment per client and per month. Some clients pay every month, others pay every 3, 6 or 12 months. I know the starting month for every contract. And I would like to see what is my income for January, February, etc.
How can I calculate the income at the different months?
Here are three samples:
| Client | amount per month | starting month | pays every X months |
|---|---|---|---|
| client A | $29 | 1 (January) | 3 |
| client B | $39 | 3 (March) | 6 |
| client C | $49 | 10 (October) | 12 |
Income for January: $XXX
Income for February: $XXX...