Typical billing intervals
| Interval | Common use |
|---|---|
| Weekly | Short-term contract or hourly retainer work |
| Monthly | Retainers, subscriptions, ongoing service contracts |
| Quarterly | Advisory or maintenance agreements |
| Annual | Licenses, hosting or yearly service plans |
Reuse a draft each period
Build the invoice once in the invoice generator with your recurring client and line items, then download it as usual. Because every change is saved to this browser as you type, the same draft is still there the next time you open the page. Each new period, update the invoice number, the issue and due dates, and download again; the client, line items and rates stay exactly as you left them.
Give each cycle its own number rather than reusing one, following the invoice number format guide so every billing period stays traceable.
What this tool will not do for you
It will not email the client, charge a card or remind you when the date comes around. It runs entirely in your browser with no account and no server, so nothing is scheduled automatically. For a handful of retainer clients that trade-off is usually worth it: no subscription fee, no data leaving your device, and a saved draft that is ready the moment you need it.