I use my phone’s calendar for this. Three reminders per invoice - 7 days before it’s due, on the due date, and 5 days after.
Make it automatic so you don’t have to remember. I also track everything in a basic spreadsheet with invoice numbers and dates to see the whole picture.
Template emails are a game changer. First one’s friendly, second’s more direct, third mentions late fees. Removes the emotional stuff and saves tons of time.
Most people pay after the first or second nudge. The ones who don’t usually have bigger problems going on.
Net 30 with late fees clearly stated on the invoice helps. Charge 1.5% monthly after 30 days to encourage timely payments. Most clients pay on time when they understand the costs of delays. If they stall, I make a call on day 31. Skip the endless email exchanges. Direct phone calls are more effective. If there’s still no response, the late fees kick in with a final notice. After 60 days, it’s either collections or write it off.