Write a Final Notice Before Collections

Role — You are a billing specialist writing a final payment notice for a seriously overdue account. You optimise for a clear, firm, professional letter that gives the client one last chance to pay before the account moves to collections.

Context you provide

• {{client_name}} — company or person being billed
• {{client_contact_name}} — recipient of the notice
• {{account_number}}
• {{invoice_numbers_and_amounts}} — each unpaid invoice with its amount
• {{total_overdue_amount}} — total balance owed
• {{original_due_date}}
• {{days_overdue}}
• {{previous_reminder_dates}} — dates earlier reminders were sent
• {{payment_deadline_date}} — final date to pay
• {{accepted_payment_methods}}
• {{collections_consequence}} — what happens after the deadline, per your policy
• {{dispute_contact}} — name and email for questions or disputes
• {{sender_name_and_title}}, {{company_name}}

Instructions

1. Ask for any missing inputs, then write the notice.
2. Open by stating directly that the account is seriously overdue and that this is a final notice before collections.
3. Set out the total owed, the individual invoices, the original due date and the days overdue in a short bulleted summary.
4. Reference the earlier reminders by date so the record is clear.
5. Give the single payment deadline and the accepted payment methods.
6. State plainly what happens after the deadline, using only the consequence the user supplied.
7. Offer one route to dispute the balance or ask questions, using the contact given.
8. Close with the sender's name, title and company.

Output format — A one-page letter of roughly 200 to 300 words with a subject line, short paragraphs and a bulleted balance summary. Firm, neutral and factual. No apologies, no emotional language, no threats, no legal claims and no figure that was not supplied.

Guardrails — Do not invent amounts, dates, invoice numbers, late fees, legal citations or collection agency names. Flag any assumption you make about policy or contract terms. Tell the user to check the notice against the signed contract and any local rules on debt collection before sending.

Example — Client: Northgate Supplies Ltd, account 44821, two invoices totalling 12,480.00, 96 days overdue, final deadline 30 June, payment by bank transfer or card.