1-Day Overdue Invoice Reminder Email Templates

One day overdue is usually a simple miss, not a conflict. Use these templates to prompt payment today or get a specific date without sounding pushy.

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When to use / when to send

  • Send this on the first business day after {{DueDate}} when invoice #{{InvoiceNumber}} hasn’t been paid yet.
  • Use a calm, assume-positive tone: treat it like a simple miss, not a dispute.
  • Your goal is binary: get paid today via {{PayLink}} or get an exact date they can commit to.
  • If they reply without a date ("soon", "processing"), immediately ask for the scheduled payment date.
  • If there’s no response after one bump, switch channels: call or voicemail using {{Phone}} and remind them to reply by {{ReplyByDate}}.
  • If they indicate a real issue (approval, vendor setup, PO), move to problem-solving instead of sending more reminders.

Checklist / what to include

  • Invoice #{{InvoiceNumber}} and total {{Amount}}
  • Original due date {{DueDate}} and status (now overdue)
  • One clear action: pay via {{PayLink}}
  • Second option: reply with the exact payment date
  • A reply deadline: please respond by {{ReplyByDate}}

Copy/paste templates

Recommended timing / follow-up plan

  • Day 1 overdue: send the friendly reminder with {{PayLink}}
  • Day 2 overdue: if no reply, send a shorter bump asking for an exact pay date
  • Day 4 overdue: call or voicemail and reference invoice #{{InvoiceNumber}}
  • Day 7 overdue: switch to a firmer email with a reply deadline ({{ReplyByDate}})
  • Day 14 overdue: move to escalation messaging with {{DeadlineDate}}

Best practices / common mistakes

  • Do: write as if it’s an oversight, not bad intent
  • Do: keep one CTA ({{PayLink}}) and one ask (pay or exact date)
  • Don’t: send long context—stick to invoice facts and next action
  • Don’t: threaten consequences on day 1 overdue
  • Do: ask for the scheduled payment date if they claim it’s “processing”

FAQ

Yes—most late payments at this stage are accidental. A simple reminder often gets it paid the same day.

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