Send the invoice the same day you complete the work, not days later. Include your business info, client info, a unique invoice number, itemised line items, payment terms (Net 15 or Net 30), and clear payment instructions. Use a PDF template, not a hand-typed email — it looks professional and gets paid faster. This guide walks through hourly vs project billing, payment terms, late fees, tax implications for US freelancers, and common mistakes.
No — sole proprietors can invoice using their personal name. An LLC adds liability protection but isn't required to invoice or get paid.
INV-001, INV-002, sequentially. Or year-based: INV-2026-001 (the first invoice of 2026). Pick a system on your first invoice and stick with it.
In the US, freelance income is reported on Schedule C of your 1040. The IRS expects quarterly estimated tax payments. Track all business expenses to reduce taxable income.
Same day if possible, within 24-48 hours otherwise. Speed of invoicing correlates strongly with speed of payment.
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