How do I add in past transactions for my tenants?

You can easily add past transactions whenever it's needed.

If you want to add past rent transactions for your account history and report stats, you can add all the past leases to the system. Simply create the lease with the past start date and the system will add past rent transactions to the accounting page.

Here you can read more:

How do I create a lease?

For example, if the tenant had been renting the unit before you started using the software from the 1st of January 2020 till the 1st of January 2021 with the monthly rent schedule, fill in the past start and end dates and the first invoice date in the lease page, and the system will automatically create 12 open invoices. You can put a checkmark to mark them as paid automatically as well. Or, you can do this later by following the instructions from the link below:

How do I easily mark multiple transactions as paid?

If you want to add some other past transaction (for parking, laundry, storage space, etc.), or a single rent payment, go to Transactions or open the Revenues page from the Financials menu to get to the Invoices tab. Click on the "Money in" button, and choose "Income invoice" option:

Now, fill in all the necessary fields and select the needed past date. If the invoice was paid, check the box "Mark as paid" and Confirm the action by providing the necessary information: