A friendly payment reminder works when it is warm and specific: invoice number, amount, due date, a payment link, and one clear ask. Here is the shortest version - two sentences you can send right now - followed by seven timing-based variants for every point in the cycle.
Start here: the shortest friendly reminder
Subject: Quick reminder: invoice [Invoice number]
Hi [Client name] - a quick, friendly reminder that invoice [Invoice number] for [Outstanding amount] was due on [Original due date]. You can pay here whenever convenient: [Payment link] Thanks so much, [Your name]
The 7 friendly reminder templates by timing
1. Three to seven days before due
A pre-due courtesy note. Surfaces missing POs or disputes while there is still time to fix them.
Subject: Invoice [Invoice number] due [Original due date]
Hi [Client name], Hope all's well! A quick note that invoice [Invoice number] for [Outstanding amount] is due on [Original due date]. Payment link: [Payment link] If anything on the invoice needs adjusting, let me know before the due date and I'll sort it. Thanks, [Your name]
2. Due tomorrow
A light nudge the day before. Often turns "next week" intentions into same-week payment.
Subject: Invoice [Invoice number] due tomorrow
Hi [Client name], Just a friendly heads-up that invoice [Invoice number] for [Outstanding amount] is due tomorrow, [Original due date]. You can pay in a minute here: [Payment link] Thanks so much, [Your name]
3. Due today
Send in the morning of the due date. Purely factual - nothing is late yet.
Subject: Invoice [Invoice number] is due today
Hi [Client name], A quick reminder that invoice [Invoice number] for [Outstanding amount] is due today. Payment link: [Payment link] If it's already scheduled, you can ignore this - and thank you! Best, [Your name]
4. One day overdue
The gentlest possible overdue note. Assume the payment crossed in the mail.
Subject: Invoice [Invoice number] - due yesterday
Hi [Client name], Invoice [Invoice number] for [Outstanding amount] was due yesterday and hasn't come through yet - it may simply be in progress on your side. If not, here's the payment link: [Payment link] Any questions about the invoice, just reply. Thanks, [Your name]
5. Three days overdue
Still friendly, but now ask for a quick confirmation so silence doesn’t stretch into weeks.
Subject: Quick check: invoice [Invoice number]
Hi [Client name], Just checking in on invoice [Invoice number] for [Outstanding amount], which was due on [Original due date]. Could you let me know if payment is on its way, or when it's scheduled? Payment link: [Payment link] Happy to help if anything is blocking it. Best, [Your name]
6. Seven days overdue
The last friendly touch before the second-reminder stage. Name the days overdue and ask for a date.
Subject: Invoice [Invoice number] - one week past due
Hi [Client name], Invoice [Invoice number] for [Outstanding amount] is now a week past its due date of [Original due date]. Could you confirm a payment date this week? Payment link: [Payment link] If there's an issue with the invoice, tell me and I'll resolve it right away. Thanks, [Your name]
7. Friendly reminder for a valued client
For long-term clients where the relationship outweighs one invoice. Warm, personal, still specific.
Subject: Small admin note: invoice [Invoice number]
Hi [Client name], Hope the [current project / recent work] is going well on your end. One quick admin item: invoice [Invoice number] for [Outstanding amount] (due [Original due date]) is still open. No rush drama - here's the link whenever convenient this week: [Payment link] Looking forward to what's next. Warm regards, [Your name]
Friendly payment reminder SMS templates
Some clients live in their messages, not their inbox. A friendly payment reminder SMS follows the same rule as email — warm but specific — just compressed to one or two sentences with a payable link. Send the email first for the paper trail, then use a text like these:
Hi [Client name], friendly reminder that invoice [Invoice number] ([Outstanding amount]) was due [Original due date]. Pay here: [Payment link] - thanks! [Your name]
Hi [Client name], invoice [Invoice number] for [Outstanding amount] is due today. Quick link if helpful: [Payment link]. Thanks! [Your name]
Hi [Client name], just emailed a reminder about invoice [Invoice number] ([Outstanding amount], due [Original due date]) in case it landed in spam. Link: [Payment link]. Cheers, [Your name]
Keep texts under 300 characters, never send them outside business hours, and switch back to email once an invoice is more than a week overdue so escalation stays documented.
Friendly, not vague
The most common mistake with polite reminders is softening the content along with the tone. "Just checking in!" with no details forces the client to dig for the invoice - so they don't. Every template on this page, however warm, states:
- The invoice number
- The due date
- The amount
- The requested action (pay, or confirm a date)
- A payment link or payment instructions
- A contact path for questions or disputes
When friendly stops working
Timeline: friendly to firm progression
- Day -7 to 0 Pre-due and due-today notes (this page)
- Day 1-7 Friendly overdue reminders (this page)
- Day 7-13 Second reminder - ask for a payment date
- Day 14-29 Firm reminder with a deadline
- Day 30+ Final notice and formal past-due process
After a week of friendly silence, switch to a 2nd payment reminder email that asks for a specific date, then a firm payment reminder at two weeks. Escalating on schedule - not emotion - is what keeps the relationship intact.
Related templates
- Invoice reminder email templates - one example for every stage in one place.
- Second payment reminder - the next stage after this page.
- Overdue invoice emails by day - day 1 through day 30 wording.
- Payment reminder subject lines - 50 options grouped by stage.
- Automated invoice chasing software - send friendly reminders automatically, on time.
Friendly reminders, sent on time, every time
ChaseAI writes polite, specific follow-ups from your invoice and sends them on schedule so you never chase manually.
