“Net 30” is one of the most common phrases on a business invoice, and one of the most commonly misunderstood by people newer to invoicing.
What it actually means
Net 30 means payment is due 30 calendar days from the invoice date — not 30 business days, and not 30 days from when the client “gets around to it.” The clock starts on the invoice date itself.
Why 30 days became the default
Many companies’ accounts payable departments run on a monthly processing cycle, and 30 days roughly aligns invoices with that cycle regardless of when in the month they arrive. It became a standard largely because it fits how larger organizations already process payments internally, not because it’s inherently the “right” length.
When a shorter term makes sense
Freelancers and small businesses without the cash reserves to wait a full month often use Net 15 or even Due on Receipt — there’s no rule requiring Net 30, and shorter terms are increasingly common, especially for newer client relationships without an established payment track record.
Net 30 vs Net 60
Net 60 doubles the wait and is more common in industries with naturally longer processing cycles (some corporate or government contracts). It’s worth negotiating a shorter term upfront if cash flow is a concern, rather than accepting a client’s default terms without discussion.
Set your own terms in seconds. Our generator supports Net 15, Net 30, Net 60, Due on Receipt, or a fully custom due date.