How do you chase a late invoice without losing the client?

Mostly for boring reasons: the invoice sat in the wrong inbox, the person who approves payments was away, your bank details were missing so the transfer was never set up, or the client is waiting on their own client. A smaller number are disputing something quietly, or genuinely short of cash.

That is why the first reminders assume a mistake and make paying easy: invoice attached again, amount and bank details in the message itself, one clear ask. Save the firm tone for the clients who have had every chance to pay.

Work the same ladder every time, so no client gets chased by mood and none gets forgotten:

• Before the due date — a short friendly note: the job is done, the invoice is attached, payment is due on the date stated. This one message prevents most lateness.
• On the due date or the day after — a plain reminder: invoice number, amount, due date passed, bank details again, and a request to confirm when payment will be made.
• Seven days overdue — firmer and shorter: the amount, the days overdue, and a specific new date you expect payment by. Mention that further work is paused while the account is overdue, if your terms say so.
• Fourteen days overdue — phone call, not a message. Ask directly what is wrong: a dispute, a cash problem, or a lost invoice. Agree a date on the call and confirm it in writing the same day.
• Thirty days overdue — a final written notice: the full amount, the history of reminders, and the date after which you will take the matter further. Send it once, in writing, and keep the copy.

Pause new work for a client whose account is well overdue — politely, and say exactly what restarts it: payment of the overdue invoice. Starting the next job for a client who has not paid for the last one is how a small problem becomes a big one.

If payment still does not come, your options depend on your contract and the amount, and that is the point to take proper advice rather than improvise threats you cannot carry out. Everything you sent along the ladder — dated, written, polite — is your evidence, which is why the ladder is written in the first place.

In InstaJack, the money panel shows who owes you, how much and since when, and part payments are recorded against the invoice — so the ladder starts from facts, not from memory. InstaJack does not send reminders on its own: every message goes out on your tap, in your words. For the habits that stop invoices going late at all, read get paid faster.