Invoice Requirements for US Freelancers: What the IRS Expects

Unlike most countries, the United States has no federal value-added tax (VAT or GST). For US freelancers, this simplifies invoicing considerably — but it doesn't mean there are no rules. This guide covers what belongs on a US freelancer invoice, the 1099-NEC threshold, state sales tax obligations, and self-employment tax basics.

There's no federal VAT — but invoices still matter

While the US doesn't have a consumption tax at the federal level, professional invoices still serve critical legal and tax purposes:

• They establish the business relationship and document the transaction
• They trigger the 1099-NEC reporting obligation for your clients at the $600 threshold
• They are your primary record of income for Schedule C (self-employment income)
• They provide the documentation needed to support deductions and business expenses

What every US freelance invoice should include

There is no federal law specifying invoice format for freelancers, but standard professional practice and business common sense dictate:

• Your full legal name or business name (DBA if applicable)
• Your address
• Your phone number and email address
• Client's name and address
• Invoice number — unique and sequential
• Invoice date
• Description of services with quantities and rates
• Subtotal
• Sales tax (if applicable — see below)
• Total amount due
• Payment due date
• Payment instructions (bank details, Venmo, Stripe link, etc.)

The 1099-NEC threshold: $600

If a business pays you $600 or more in a calendar year for services as an independent contractor, they are required to issue you a 1099-NEC form by January 31 of the following year. This form reports your income to the IRS.

You are responsible for paying income tax and self-employment tax on this income whether or not you receive a 1099-NEC. Keep records of all invoices and payments regardless of amount — the $600 threshold is for the payer's reporting obligation, not for your income tax obligation.

EIN vs SSN on invoices

You don't need to put your Social Security Number or EIN on your invoices. The W-9 handles that separately. However, if you have an EIN (which you can get free from the IRS in minutes at irs.gov), some freelancers include it on invoices to appear more established and to avoid sharing their SSN unnecessarily.

State sales tax for freelancers

This is where it gets complicated. Sales tax in the US is state-administered, and rules on whether services are taxable vary dramatically:

• No sales tax states: Alaska, Delaware, Montana, New Hampshire, and Oregon have no state sales tax at all.
• Services mostly exempt: Most states exempt professional services (legal, accounting, consulting, design, development) from sales tax. But this is not universal.
• Some states tax services: Hawaii, New Mexico, South Dakota, and a few others apply sales tax more broadly to services.
• Specific service categories: Some states tax digital goods, software, or specific professional services even if others are exempt.

The safest approach: check your state's revenue department website or consult a local accountant to determine if your specific services are taxable in your state and in states where your clients are located.

Self-employment tax

As a freelancer, you pay both the employee and employer portions of Social Security and Medicare taxes — a combined rate of 15.3% on your net self-employment income. You can deduct half of this (the "employer" portion) from your gross income for federal income tax purposes.

In addition to self-employment tax, you pay federal income tax on your net profit at your applicable bracket rate. Most self-employed individuals make quarterly estimated tax payments to avoid underpayment penalties.

Invoicing clients outside the US

When billing international clients, your invoice doesn't change significantly — no additional US tax applies on the export of services. Include your address and payment details. For currency, you can invoice in USD or the client's currency — just specify clearly. Bank wire transfers often work best for international payments.

Record-keeping requirements

The IRS generally has 3 years to audit your return from the filing date, so keep records for at least that long. If you underreport income by more than 25%, the statute extends to 6 years. Best practice: keep all invoices, receipts, and business records for 7 years.