Get paid on time with clear invoices and kind reminders

Send the bill the same day, and keep a kind reminder ready.

By Rich Thurman, who spent about 15 years at Microsoft as an application-development consultant and has helped about 1,500 small businesses automate the busywork that eats their week. He still builds real software, AI and data systems today.

What it is

This free NextGen Business Community guide is about two small jobs. First, you send a clear invoice as soon as the work is done. Then, if the money does not come in, you send a kind reminder. A free AI tool can write the first draft of both. You check the facts and send them yourself.

An invoice is a bill. It says what you did, what it costs, and when to pay. A reminder is a short, polite note that says the bill is still open.

Why it matters for your business

When you are busy, bills slip. You finish a job, drive to the next one, and the bill waits a week. Then the customer forgets too. Late money makes the whole week harder.

A clear invoice and a simple system make it easier to get paid. When the bill is clear, people have fewer questions. When a reminder is ready to go, you don't put off asking.

Here is a made-up example. Rosa runs a small window washing business. She used to send bills on Fridays, from memory. Some jobs got left off. Now she sends each invoice the same day, with the date, the job and the address. If a bill is still open after the due date, she sends a short, friendly reminder. She does not have to stew over the words, because the draft is already done.

Try it with AI

Open a free AI tool, like ChatGPT, Gemini or Copilot. Leave out customer names, account numbers and anything private. You will add those yourself. Copy this prompt, fill in the parts in brackets, and paste it in.

I run a small business: [what you do].
Please write two short messages I can reuse.
1. A note to send with an invoice. Say thank you, name the job, say when payment is due and how to pay. Leave spots for [name], [job], [amount] and [due date].
2. A kind reminder for when an invoice is past due. Friendly, not pushy, no guilt, no threats. Under 50 words. Leave the same spots.
Use plain words. Do not add late fees, deals or promises.

What a good answer looks like: two short notes that sound like a real person. The reminder should read like a friendly nudge, not a scolding. If it sounds stiff, type "Make it warmer and shorter."

A few things to watch for:

• Check every fact. The AI does not know your prices or your dates.
• Late fees are your call. The rules on late fees can be different from state to state. Before you add one, check with your state's consumer office or a pro.
• If a bill stays unpaid for a long time, ask a pro what to do next. Don't let the AI decide that for you.

5-minute exercise

1. Run the prompt. Save both notes where you keep your invoices.
2. Change any word that doesn't sound like you.
3. Find one job you finished but have not billed yet. Send that invoice today.

Done when: you have one invoice note and one reminder saved, and one bill is out the door.

Takeaway

Send the bill the same day, and keep a kind reminder ready.

The NextGen team

Questions

What is an invoice?

An invoice is a bill. It says what you did, what it costs, and when to pay.

What is a reminder?

A reminder is a short, polite note that says the bill is still open.

What if a bill stays unpaid for a long time?

If a bill stays unpaid for a long time, ask a pro what to do next. Don't let the AI decide that for you.

Related: Set up simple record keeping · All guides.

Watch AI used on real jobs, live and free

I feed it the actual copy of the post and then I get back from it the response to that Facebook post and I've gone from getting no likes on those to getting about 10 or 15 likes on people that have read those posts [...]

Every Tuesday at 5:30 pm Arizona time, Rich teaches a free 30-minute AI training on everyday business jobs like the one on this page, then Q&A for the rest of the hour. Online, on Zoom, open to everyone.

Get the free join link

Practical help, not legal, tax or financial advice. Check anything important with a pro.