Send polished invoices in minutes. Built for solo freelancers in the United States who bill hourly, by project, or on retainer. No accounting degree required.
| Description | Qty | Rate | Amount |
|---|---|---|---|
| UX design — homepage | 12 hrs | $95.00 | $1,140.00 |
| Component library updates | 8 hrs | $95.00 | $760.00 |
| Project management | 3 hrs | $75.00 | $225.00 |
Hourly, fixed-fee, and retainer billing in one template
US-formatted dates, dollar amounts, and sales tax fields
Built-in payment links for Stripe — get paid same day
Automatic late-payment reminders so you stop chasing clients
No. Sole proprietors can invoice clients under their own name and SSN in the United States. An LLC or EIN helps separate finances, but it isn't required to bill a client.
Most US states don't tax pure services (design, writing, consulting), but a handful — including Hawaii, New Mexico, South Dakota, and West Virginia — do. Influx Theory lets you add a tax line per invoice when needed.
Net-15 terms plus a Stripe pay link on every invoice cuts payment time roughly in half versus mailing checks. Influx Theory wires both in by default.
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