Overdue Invoice SMS Payment Date Request Script

SMS is the fastest channel to nudge AP or a busy founder for an overdue invoice. Use this quick script to request the exact payment date and get an immediate response. Templates only — not legal advice.

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When to use / when to send

Checklist / what to include

  • SMS should reference invoice #{{InvoiceNumber}} and total {{Amount}}.
  • Ask for confirmation of payment release date.
  • Be polite but direct; keep message under 300 characters.
  • Include pay link if permitted.
  • No sensitive client or company info beyond essentials.
  • Specify if reply or email confirmation is needed.
  • Send during business hours.
  • Footer: templates only – not legal advice.
  • One ask per message.
  • Option to reference prior reminders if useful.

Copy/paste template

How to use this template

  • Use only if you have client’s consent to SMS.
  • Send on the same day as your most recent email follow-up if still unpaid.
  • If reply is vague, respond asking for exact date.
  • Follow up with a call if no reply within 1 business day.
  • Always confirm pay date in writing after SMS response.

Recommended timing / follow-up plan

  • Send immediately after no reply to reminder email.
  • Follow up within 24h if still no answer.
  • Escalate via call after 2 SMS attempts with no engagement.
  • Document all SMS threads for audit trail.
  • If partial payment made, send confirmation reply and clarify full amount owed.

Best practices / common mistakes

  • Do: Keep messages brief and direct.
  • Do: Clearly reference invoice details.
  • Do: Send during appropriate hours.
  • Don’t: Include sensitive info beyond basics.
  • Don’t: Abuse SMS for non-urgent reminders.
  • Don’t: Send multiple SMS in one day.
  • Don’t: Omit your contact/company name.
  • Do: Request written confirmation if the client replies verbally.
  • Don’t: Copy/paste email content – write for SMS length.

FAQ

Only use SMS with client consent and for urgent after-hours reminders or silent responses.

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