When creating a project, you can either enter the percentage you want to take and let the software calculate the specific amount or you can specify the dollar amount you intend to collect and let the software calculate what percentage that represents. Once the down payment is collected, a percentage based down payment credit is applied to each item on the invoice.
Let's say you are creating a new project that contains 3 items that are $1,000 each. Your total estimate is $3,000 and you take a down payment of $1,500, which is 50%. When it is time to create your invoice, you will select each line item due. If your invoice includes all items, the invoice total will be $3,000. The invoice will show a down payment credit of $1,500 so the balance due is $1,500.
If you are only billing for two items, the invoice total will be $2,000. It will show a down payment credit of $1,000 and a balance due of $1,000. The next invoice for the remaining $1,000 will show a down payment credit of $500 and a balance due of $500.
This means you can bill customers according to the line items on your initial estimate and let the software do the tedious task of calculating what has been collected and what is still due!