How to Invoice as a Freelancer

Freelance invoicing comes with decisions that a traditional employee never has to make — how to structure pricing, what payment terms to set, and how to handle a client who’s slow to pay.

Decide your billing structure upfront

Hourly, per-project, or retainer — each has trade-offs. Hourly is simplest to invoice but requires time tracking; per-project is predictable for the client but risks under-billing if scope creeps; retainers smooth out cash flow but require clear scope boundaries to avoid resentment on either side.

Set payment terms before you start, not after

Net 15 is common for freelancers specifically because it’s shorter than the Net 30 many companies default to — worth stating explicitly in your contract or first invoice rather than assuming the client’s default terms apply.

Invoice promptly

The longer you wait to send an invoice after completing work, the longer you’ll likely wait to get paid — clients tend to process invoices in the order they arrive, and a delayed invoice often means a delayed payment cycle too.

Have a plan for late payment before it happens

See our overdue invoice follow-up guide for a practical escalation approach.