Net 30 terms are an agreement, not a suggestion. When a client misses the 30-day deadline, your follow-up should be prompt, structured, and escalating — not apologetic or vague.
Understanding the net 30 timeline
Net 30 means the payment window opens on the invoice date and closes 30 days later. Here is a concrete example:
- Invoice date: June 1
- Payment due: July 1 (day 30)
- Overdue from: July 2 (day 31)
Many freelancers make the mistake of waiting until the invoice “feels” late before following up. The net 30 due date is the trigger — not two weeks after it.
Why reminders before day 30 work
Sending a brief reminder on day 25 — five days before the due date — is one of the most effective things you can do to prevent a net 30 invoice from going overdue. Most clients who pay on time do so because they remembered. A light reminder is not nagging — it is practical customer service for clients with busy inboxes.
Waco lets you set automatic pre-due reminders so this happens without manual effort.
A pre-due reminder on day 25 converts a meaningful portion of late payments to on-time payments. It is low effort with high return.
Day 31: the first overdue follow-up
The day after your net 30 deadline, send a short, professional email.
Subject: Invoice #[number] — payment due July 1
“Hi [Name], just a note that invoice #[number] for $[amount] was due yesterday under our net 30 terms. Please let me know if it’s in process or if you need anything from me. Happy to resend the invoice.”
Keep it neutral. Clients sometimes forget. Give them the benefit of the doubt on day one.
Day 37 (1 week overdue): the follow-up
If no response after a week, escalate.
Subject: Invoice #[number] — one week overdue
Reference your earlier email. Ask for a specific payment date. Reattach the invoice. Mention that your late fee policy is now in effect if applicable.
Day 44 (2 weeks overdue): firm notice
Subject: Invoice #[number] — 14 days overdue, action required
State the amount, reference your net 30 terms, give a 48-hour deadline, and make clear that further delay will result in a formal demand.
Day 51 (3 weeks overdue): final notice
Issue a formal demand letter referencing the net 30 terms, the accumulated late fees, and the specific consequence you will pursue (small claims, collections, or legal) within seven days if payment is not received.
Tracking net 30 invoices with Waco
Waco tracks every net 30 invoice from send to payment. You see the due date, whether the client opened the invoice, and exactly how many days overdue each balance is. When it’s time to follow up, the invoice link is ready to resend. And the full history — sends, opens, reminders — is logged automatically for your records.
Ready to send stronger proposals?
Build, send, and track proposals in one place so follow-up is easier.
Start your free trial →
