Payroll Processing Company
The shortcut: Don't try to out-build ADP or Gusto on standalone payroll. Become a Gusto Partner or Rippling Partner, resell the platform with bookkeeping bundled, and pocket the partner-margin while your client thinks they hired one person for everything. Bundled wins about 80% of the time and the partner economics roughly double your effective hourly.
Industry: Finance & Insurance | Investment level: Small — $5,000-$15,000 | Time to launch: 8-14 weeks (EFTPS enrollment + IRS Reporting Agent application + first state UI registration gate the launch)
Best for: Former in-house payroll managers, bookkeepers who've been quietly handling client payroll on the side, or HR generalists who can read a Form 941 without flinching and know why a tipped-employee paycheck math is its own discipline. What you'll likely make: $1,200-$2,500 month 3, $3,500-$6,500 month 6, $7,000-$12,000 month 12. Math is in Section 4.
Market Opportunity
Most small business owners think ADP and Gusto are basically interchangeable — pick one, plug in your employees, done. That assumption works fine until it doesn't. Tip-credit FICA calculations for a restaurant with 12 tipped servers, multi-state payroll for a team that went remote in three states, certified payroll for a subcontractor on a prevailing-wage job — these are where the "just pick one" platforms charge extra, get things wrong, or route you to a support queue with a four-day response time. That's where a specialist with an actual phone number beats the platform every time, and keeps the client for years.
Small business payroll is sized in the tens of billions, with ADP, Paychex, and Gusto anchoring the top. None of them are your real competition. Your competition is the owner doing payroll at 9pm Sunday with a spreadsheet and a bank login — the person who would happily pay $80-$150/month to never think about a 941 deposit again.
The cost of one missed Form 941 deposit — IRS failure-to-deposit penalty starts at 2% and climbs to 15% of the underpayment — usually exceeds a year of your fees. You're selling "I absorb the liability and you won't get a notice letter."
Your wedge: accuracy and a real person on the phone when an employee's direct deposit doesn't land. The big processors keep raising prices and pushing clients toward chatbots. A solo provider with 30-40 small clients on a partner platform makes more per hour than a midmarket Paychex rep — and clients don't leave, because switching payroll providers (re-keying YTD wages, reapplying for state UI accounts, retraining the team) costs more than your fee.
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