Let your customer know the terms of sale when you make the sale or at the time of the
order.

Customers are usually happy to comply if they see your stated credit terms right from the
beginning.

Send a friendly reminder notice.

Many businesses pay 90-120 days after purchase.  Send a reminder notice to speed up payment.
E-mail or fax is a fast, good way to touch base with a slow paying customer.

Make a phone call.
You should always assume payment has been made and ask, “When did you send your check?”  Then
don’t say anything; let them break the silence, no matter how long it may seem.