Outsourcing payroll: pros and cons in the trades

Outsourcing payroll pros and cons come down to this: a payroll service takes the tax deposits, the quarterly Form 941 and the W-2s off your desk, but it can't take the responsibility. The IRS says the employer stays "ultimately responsible" for the taxes even when someone else makes the deposits, and a service only pays what you tell it, so the hours still have to be right.

We run payroll for home service companies, so we're not neutral. Still, for a trades shop with commissions, spiffs, overtime and more than a handful of techs, handing it off is usually the right call, as long as you keep two checks in-house. Here's what each choice takes and what to watch either way.

Pros and cons of outsourcing payroll

Pros

• Tax deposits go out on the IRS schedule, every payday or every month.
• Form 941 every quarter, state returns and W-2s in January are filed for you.
• Rate and wage-base changes get picked up when they change.
• Nobody in your office is the only person who knows how to run payroll.
• Direct deposit, pay stubs and new-hire reporting usually come with it.

Cons

• You're still on the hook if the service doesn't pay the taxes.
• It runs the hours and rates you send. If the hours are wrong, the checks are too.
• You pay a fee, usually per payroll run or per employee, often with add-ons for year-end forms or extra states.
• Changes after the cutoff wait for the next run, so a missed spiff isn't a same-day fix.
• A service that doesn't talk to your bookkeeper leaves one lump called "payroll" on your profit and loss.

What in-house payroll takes

Here's an example for a shop with 8 techs and 2 office staff paid every two weeks. The hours are rough estimates; time your own last three payrolls to get yours.

That's two and a half work weeks a year in-house. Outsourcing takes about half of it. The half it can't take, getting the hours right and matching payroll to the books, stays with you either way.

The taxes and deadlines a service takes over

This is what you'd be handing off. Payroll tax is the group of taxes tied to wages. Some you withhold from your people's checks, some you pay yourself:

• Federal income tax, withheld from each check based on the employee's W-4.
• Social Security: 6.2% withheld from the employee and 6.2% paid by you, on wages up to $184,500 in 2026.
• Medicare: 1.45% withheld and 1.45% paid by you, with no cap.
• Federal unemployment (FUTA), paid by you alone: 6.0% on the first $7,000 of each employee's wages, less a credit of up to 5.4% for state unemployment tax.
• State income tax withholding and state unemployment, under your state's rules.

You don't pay these once a year. You deposit them on a schedule the IRS sets from your own history. For 2026, if you reported $50,000 or less in payroll taxes during your lookback period, you deposit monthly; above that, semiweekly, within days of each payday. On any day you pile up $100,000 or more in tax, it's due the next business day. Each quarter you report it all on Form 941, due April 30, July 31, October 31 and January 31 (IRS Publication 15, Form 941 instructions). Our post on how to manage payroll taxes goes deeper.

Does a payroll service handle the taxes for you?

A full-service provider figures the withholding, makes the deposits and files the returns. You still own the result. The IRS is blunt about it:

The employer is ultimately responsible for the deposit and payment of federal tax liabilities. Even though the employer may forward the tax amounts to the third-party to make the tax deposits, the employer is the responsible party.

It adds that "the employer may also be held personally liable for certain unpaid federal taxes" (IRS). The taxes you withhold from paychecks are called trust fund taxes. If they go unpaid and can't be collected from the business, the IRS can assess a penalty against the people responsible for paying them who acted willfully, and that can include "one who signs checks for the business" (Publication 15).

The IRS gives three checks that keep a service honest:

1. Enroll in EFTPS yourself. Get your own PIN for the Treasury's Electronic Federal Tax Payment System and check your deposit history regularly.
2. Keep your own address on file with the IRS. Don't switch it to the payroll company's, or the notices go to them.
3. Treat the first late payment as a warning. In the IRS's words, "A red flag should go up the first time a service provider misses a payment or makes a late payment."

The work most worth handing off

Brandon Vaughn, who coaches home service owners, was on a call with an owner whose wife was doing payroll, the books, HR and whatever else came up, with no defined role. He told them what he'd done in the same spot:

one of my best anniversary presents I ever gave my wife was firing her from the company. … all those little small nuances of, you know, the taxes and the payroll and the day-to-day of onboarding new employees and that kind of stuff. Those are so easily delegated and trained to, you know, another third party company.

For another owner who was running payroll in-house through his bookkeeper, Brandon's main reason to hand it off wasn't cost. It was liability:

all it takes is for a bookkeeper or someone to make an error on deductions or something else like that. And it can cost you tens of thousands…

A good service puts trained eyes on every deduction. Under the IRS rule above, though, the tax responsibility stays with you, which is why two checks never leave your shop.

Keep two checks in-house

The first check is the hours. Whoever runs payroll, someone who knows the jobs has to sign off on them. In one of his companies, Brandon made it public:

at the end of the week, we would run the hour reports. And on Monday morning we would print that out and post it up on the wall. Here's everybody's hours. Didn't say how much money they made per hour …

Techs flagged their own missed punches, and the operations manager signed off before payroll ran.

The second is the books. Every payroll should land in them split the way you run the business: tech wages and their taxes in cost of goods sold, office pay in overhead. Otherwise you can't see your labor burden or your gross margin. In a cleaning company, hourly pay, drive time between homes and overtime all run through payroll, which is why our maid service bookkeeping includes it.

When in-house payroll still makes sense

Running it yourself can work when all of these are true:

• You have a few employees on straight hourly pay, in one state.
• Nobody earns commissions, spiffs or piece rates.
• You use payroll software, not a spreadsheet and a calculator.
• Someone other than the person running payroll checks the deposits in EFTPS.

Once commissions, a second state or a second office person enter the picture, the hours and the risk go up fast.

We run payroll in the same house as the books, so the deposits, the filings and the job costing come from one place (how it works, and pricing by plan). Bring your last three payroll registers to a free profit call and we'll show you where the hours and the risk sit today.

FAQ: outsourcing payroll

Is outsourcing payroll worth it for a small business?

Usually, once you have more than a few employees or any variable pay. Time your last three payrolls, average them and multiply by 26 to see what it costs you now.

How much does outsourcing payroll cost?

Pricing is usually a base fee plus a per-employee charge. Ask for a quote that includes year-end forms and every state you pay people in, since those are where add-ons show up.

Can I outsource payroll and still control it?

Yes. You approve hours, rates and bonuses before every run; the service handles the math, the deposits and the filings. Keep your own EFTPS login so you can see the deposits land.