Consulting Invoice Generator
Consulting bills against an engagement, and the invoice should say which kind: hours against a rate, milestones against deliverables, or a draw against a retainer. This invoice handles the three structures and the situations that complicate them. Scope changes, expense pass-throughs, and the timesheet backup that makes hourly billing collectable.
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| Description | Qty / hrs | Rate | Amount |
|---|---|---|---|
| Consulting hours per attached timesheet | 9.75 | $150.00 | $1,462.50 |
| Phase 1 milestone. Pricing model (accepted 8/13) | 1 | $1,200.00 | $1,200.00 |
| Pass-through: data subscription (receipt attached) | 1 | $49.00 | $49.00 |
| Subtotal | $2,711.50 | ||
| Total due | $2,711.50 | ||
When a 1099 Is Required, and When It Is Due (2026)
Thresholds are per payer, per recipient, per calendar year, and they apply to payments made in the course of a trade or business. Personal payments are not reportable. This is the reporting rule, not tax advice on what you owe.
| Payment type | Form and threshold | Due date |
|---|---|---|
| Services from a non-employee (contractors, freelancers) | 1099-NEC, at least $2,000 | To the recipient and the IRS by January 31 |
| Rents | 1099-MISC, at least $2,000 | Recipient by January 31; IRS by February 28 on paper, March 31 electronically |
| Royalties | 1099-MISC, at least $10 | Recipient by January 31; IRS by February 28 on paper, March 31 electronically |
| Gross proceeds paid to an attorney | 1099-MISC, at least $600 | Recipient by January 31; IRS by February 28 on paper, March 31 electronically |
| Prizes, awards and other income | 1099-MISC, at least $2,000 | Recipient by January 31; IRS by February 28 on paper, March 31 electronically |
| Medical and health care payments | 1099-MISC, at least $2,000 | Recipient by January 31; IRS by February 28 on paper, March 31 electronically |
| Fishing boat proceeds | 1099-MISC, any amount | Recipient by January 31; IRS by February 28 on paper, March 31 electronically |
Source: IRS Instructions for Forms 1099-MISC and 1099-NEC (Rev. 12/2026) · checked 2026-08
Late Fees and Payment Terms: What Is Typical
Conventions, not legal maximums. Several states cap late-fee interest through usury or prompt-payment statutes; check your state before charging above the typical range.
| Term | Typical practice | Notes |
|---|---|---|
| Net 30 | Payment due 30 days from invoice date | The default B2B term in the US; Net 15 and Net 60 are the common variants |
| Late fee | 1% to 1.5% per month (12% to 18% per year) | Must be stated on the invoice or in the contract before it can be charged |
| Grace period | 5 to 10 days is common courtesy | Not required by law; put it in writing if you offer one |
| Government work | 30 days, then interest accrues automatically | Federal Prompt Payment Act; most states have an equivalent for public contracts |
| Early-payment discount | 2/10 net 30 (2% off if paid in 10 days) | Worth stating explicitly as a line under the total |
Source: Federal Prompt Payment Act (31 USC 39); state prompt-payment and usury statutes · checked 2026-08
What to Know About Consulting Invoices
- Retainer engagements invoice as draw-downs: the invoice shows the retainer balance, the period's charges against it, and the remaining balance. The transparency that gets retainers renewed.
- Milestone billing ties payment to acceptance ('Phase 2 deliverable accepted 8/12'); invoicing before written acceptance is how milestone disputes are born.
- Scope changes bill cleanly only when they were papered at the time. The invoice line referencing the change order ('CO-2, agreed 8/5') closes the loop the email thread opened.
- Client-reimbursable expenses pass through at cost with documentation attached; marking up expenses without disclosure is a fee-agreement violation in most professional codes.
- Hourly consulting invoices are only as strong as the time records behind them, attaching the period's timesheet converts the invoice from a claim into an account.
Frequently Asked Questions
How does a retainer show up on invoices?
Each invoice draws against it and states the running balance. Charges this period, balance remaining. When the balance nears zero, the invoice itself becomes the replenishment conversation.
When can I invoice a milestone?
On acceptance, and the invoice should say when acceptance happened. If the SOW defines acceptance criteria, bill only after they're met in writing, an invoiced-but-rejected milestone poisons the engagement.
Are consulting services taxable?
In most states, professional services are exempt from sales tax, but a growing minority tax some service categories. Check your state once; if exempt, leave the tax line blank rather than showing 0%. Cleaner reading.
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This generator produces a general-purpose document, not legal, tax, or accounting advice. How our generators are built and checked →