Invoice Investors: Another option is to invoice investors for their portion of the fee separately.

This way you can pay your rehab expenses and then send the invoice to your lender without the need to have the capital

Do they add a percentage to their invoices?

As a STR PM with 65 or so units our vendors submit invoices and get paid 2x per month in batches.

About 50% of repairs i did from small handymans who did not provide bills/invoices/reports/statements etc.

Previously, the seller relied on paper invoices and check payments.

They're probably mad already at not getting paid on their outstanding invoices. 

I’d like to share a quick update and thank the community for your support—Mynd has agreed not to charge me for the duct cleaning estimate and has officially canceled the invoice.

Use a system that allows you to do the following 3 things: automatically charge a late fee, track all paid and unpaid invoices in a clear ledger, prevent tenants from paying partial payments.At this moment, you're also just asking about how to collect rent.

Your money should be wired to her business account if she has one.Last, with her approval of the invoices, you should pay the contractor.