{"id":5113,"date":"2026-11-13T02:08:44","date_gmt":"2026-11-13T02:08:44","guid":{"rendered":"https:\/\/getbilling.co\/blog\/?p=5113"},"modified":"2026-11-13T02:08:44","modified_gmt":"2026-11-13T02:08:44","slug":"simple-billing-small-business","status":"publish","type":"post","link":"https:\/\/getbilling.co\/blog\/nl\/simple-billing-small-business\/","title":{"rendered":"Simple Billing for Small Business: A Beginner’s System"},"content":{"rendered":"

Simple billing comes down to only four habits. First, it’s the numbering and dating of every invoice; then adding a due date and a reminder to each of them, while making sure to record every payment the day it comes in, which gives you a good view of your business every month. In this guide, we will be explaining each habit with real examples, so that you can set up a simple billing system for your small business today.<\/span><\/p>\n

These four habits are common practice, not a legal rule. They work because they stay small enough to follow every time.<\/span><\/p>\n

What Does a Simple Billing System Need?<\/b>\u00a0<\/span><\/h2>\n

Billing means more than sending an invoice<\/span><\/a>. It enables you to tell a client what they owe, collecting the money, and record it. A simple billing system needs four rules and nothing else. You decide each rule once, write it down, and follow it for every client.\u00a0<\/span><\/p>\n\n\n\n\n\n\n\n\n
Rule<\/b><\/td>\nWhat to decide once<\/b><\/td>\nVoorbeeld<\/b><\/td>\n<\/tr>\n
Number and date<\/span><\/td>\nOne numbering format<\/span><\/td>\nINV-0001, INV-0002, with the issue date<\/span><\/td>\n<\/tr>\n
Terms<\/span><\/td>\nOne payment term<\/span><\/td>\nDue in 14 days<\/span><\/td>\n<\/tr>\n
Reminder<\/span><\/td>\nOne reminder before the due date<\/span><\/td>\nThree days before<\/span><\/td>\n<\/tr>\n
Record<\/span><\/td>\nRecord every payment the day it arrives<\/span><\/td>\nPart payment of \u20a650,000 on invoice INV-0012<\/span><\/td>\n<\/tr>\n
Review<\/span><\/td>\nOne monthly check<\/span><\/td>\nFirst Monday: what is unpaid<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

You can leave some things out, like skipping complicated discounts and multiple payment terms depending on the client. Every extra rule gives you one more thing to forget, and a billing system that you forget is no system at all.<\/span><\/p>\n

Step 1: Number and Date Every Invoice<\/b>\u00a0<\/span><\/h2>\n

Always use one numbering format for every invoice, in order. The easiest way to<\/span> number invoices so they never clash<\/span><\/a> is INV-0001, then INV-0002, then INV-0003. Never reuse a number, even if you cancel an invoice. Skip it and move on to the next.\u00a0<\/span><\/p>\n

The number lets you and your client point at the same invoice. When \u20a650,000 arrives in your account, the number tells you exactly which invoice it pays.<\/span><\/p>\n

Write the issue date on every invoice too, because the due date counts from it. For example:<\/span><\/p>\n