Paying an independent contractor on a recurring schedule โ a monthly retainer, a weekly rate, or a series of milestone payments โ is common for freelancers, consultants, and service providers. It looks a lot like payroll, but it is not: a contractor is not your employee, so you do not withhold taxes from their pay, and the paperwork is different. Getting the setup right protects both sides and keeps you out of trouble at tax time.
This guide covers the practical steps: collecting a Form W-9 before the first payment, writing down the amount, schedule, and method, choosing how to actually move the money (ACH, check, or a platform), and the year-end reporting on Form 1099-NEC. It also touches on the classification line you must not cross โ treating someone as a contractor when they are really an employee. The tax-form distinctions themselves (W-9 vs. W-4 vs. 1099) are covered in a dedicated guide, linked below.
Get a Form W-9 before the first payment
Before you pay an independent contractor anything, collect a completed and signed Form W-9 from them. The W-9 is how the contractor gives you their correct Taxpayer Identification Number (TIN) and certifies it. The IRS explains that a payee uses Form W-9 to "provide your correct Taxpayer Identification Number (TIN) to the person who is required to file an information return with the IRS to report" income paid to them. You keep the W-9 on file โ you do not send it to the IRS โ and you use the information on it to prepare the contractor's 1099 at year end.
Collecting the W-9 up front, before money changes hands, matters for a practical reason: it is far easier to get a contractor's tax details when they are waiting to be paid than to chase them down the following January. If a contractor refuses to provide a TIN, you may be required to apply backup withholding to their payments, so make the W-9 a condition of onboarding. The W-9 is for contractors; an employee fills out a W-4 instead โ that contrast is explained in the W-9 vs. W-4 vs. 1099 guide.
- Send the W-9 as part of onboarding, before the first payment.
- The contractor enters their name, business name if any, TIN (SSN or EIN), and signature.
- Keep the W-9 on file โ you do not file it with the IRS.
- No W-9 / no TIN can mean you must apply backup withholding to the payments.
Put the terms in a written agreement
Recurring payments work best when the terms are written down before the work starts. A simple contractor agreement or payment authorization should spell out the scope of work, the amount and the rate basis (hourly, fixed monthly retainer, or per-milestone), the payment schedule and dates, the method of payment, and what happens if the work or the engagement changes. This is the document both sides point back to when a question comes up, and it doubles as the authorization that sets up the recurring payment.
Be explicit about the schedule and the trigger for each payment. A retainer might pay a fixed amount on the first of each month; a milestone arrangement pays a set amount when a defined deliverable is accepted; an hourly engagement pays against an approved invoice each cycle. Spelling out the trigger โ calendar date, accepted deliverable, or approved invoice โ prevents the most common disputes and gives your records a clear basis for each payment.
- Scope of work and the deliverables expected.
- Amount and basis: hourly rate, fixed monthly retainer, or per-milestone.
- Payment schedule and the trigger for each payment (date, milestone, or approved invoice).
- Payment method and the account details needed to pay.
- Term, renewal, and how either side can end the arrangement.
Choose a payment method
Once the terms are set, decide how the money will actually move. ACH bank transfer is the most common choice for recurring contractor pay: it is low-cost or free, lands directly in the contractor's account, and is easy to schedule. To set it up you need the contractor's bank routing and account numbers and their authorization to send the payments โ captured on a contractor payment authorization so you have a record of what they agreed to. For a refresher on how ACH consent works, see the guide on ACH authorization forms.
A paper or printed check still works, especially for one-off milestone payments, and only needs the contractor's mailing details โ though it is slower and easier to lose. Payment platforms and marketplaces are a third option: they handle the transfer and sometimes the tax paperwork, but they take a fee. Whatever you choose, the principle is the same: have the contractor's details and consent on file, and keep a record of every payment you send.
- ACH bank transfer โ low-cost, direct, easy to schedule; needs routing/account details and authorization.
- Check โ simple for one-off milestones; slower and needs only mailing details.
- Payment platforms / marketplaces โ convenient and may handle paperwork, but charge a fee.
Do I need to file a 1099 for a contractor?
If you pay an independent contractor in the course of your trade or business, you generally must report it to the IRS on Form 1099-NEC (Nonemployee Compensation) at year end. The reporting threshold is what trips people up, because it recently changed. For 2025 and earlier, the long-standing threshold was $600: you filed a 1099-NEC for any nonemployee you paid at least $600 for services during the year. Under the One Big Beautiful Bill Act, that threshold rises to $2,000 for payments made after December 31, 2025 (the 2026 tax year), and it is set to be indexed for inflation in later years.
Two things hold true regardless of the threshold. First, the threshold only governs the paperwork โ income is taxable to the contractor whether or not a 1099 is issued, and you should keep complete records of everything you pay. Second, the 1099 is built from the W-9 you collected up front: the contractor's legal name and TIN come straight off that form. Recurring payments add up fast, so a contractor on a monthly retainer will almost always cross the reporting threshold over a year โ another reason to get the W-9 and keep clean records from payment one.
- $600 threshold for payments made through 2025 (the 2025 tax year and earlier).
- $2,000 threshold for payments made after December 31, 2025, with inflation indexing in later years.
- Report on Form 1099-NEC; the contractor's name and TIN come from their W-9.
- Income is taxable to the contractor regardless of whether a 1099 is issued.
Don't misclassify an employee as a contractor
The biggest risk in paying someone as a contractor is that they are not really one. Misclassifying an employee as an independent contractor โ to skip payroll taxes, benefits, or withholding โ can lead to back taxes, penalties, and liability. The IRS decides classification under common-law rules that weigh the whole relationship, grouped into three categories: behavioral control (does the business control what the worker does and how), financial control (who controls the business side โ how the worker is paid, who supplies tools, whether expenses are reimbursed), and the type of relationship (written contracts, benefits, permanence, and whether the work is a key part of the business).
The IRS stresses that no single factor decides it: "The keys are to look at the entire relationship and consider the extent of the right to direct and control the worker." A genuine contractor controls how and when they do the work, often serves multiple clients, and supplies their own tools. If you direct the day-to-day work like a boss directs an employee, the law may treat the person as an employee no matter what the contract says โ in which case a W-4 and payroll, not a W-9 and 1099, would apply. When the line is unclear, get professional advice before you set up recurring payments.
The bottom line
To set up recurring payments to an independent contractor, collect a signed Form W-9 first, write the amount, schedule, and method into an agreement, and then pay โ usually by ACH, with the contractor's authorization on file. Keep records of everything, because you generally must report contractor pay on Form 1099-NEC: the threshold is $600 for payments made through 2025 and rises to $2,000 for payments made after December 31, 2025. And make sure the person really is a contractor under the IRS common-law rules, not an employee in disguise โ misclassification is costly to fix.