Why Payroll Setup Matters More Than You Think
Most founders treat payroll as a back-office chore. It's not — it's a legal obligation with real consequences. The IRS can personally hold founders liable for unpaid payroll taxes. Misclassifying a single employee as a contractor can cost $5,000–$25,000 in back taxes and penalties. And employees who don't get paid correctly lose trust fast. Set this up right on day one and you'll never think about it again.
Classify Your Workers Correctly
Before you open any software or file any paperwork, answer one question: is this person an employee or a contractor? The IRS, DOL, and your state all have tests for this — and getting it wrong is the most expensive mistake a startup can make. The default should be employee unless your contractor clearly passes the behavioral, financial, and type-of-relationship tests.
| Factor | Employee | Contractor |
|---|---|---|
| Work schedule | You set their hours | They set their own hours |
| How they're paid | Regular salary or hourly | Per project or milestone |
| Tools & equipment | You provide them | They use their own |
| Other clients | Works only for you | Has multiple clients |
| Benefits eligible | Yes | No |
| Payroll taxes | You withhold & match | They handle it themselves |
Warning
The “just call them a contractor” approach is the #1 legal landmine at early-stage startups. If they work exclusively for you, follow your direction, and use your tools — they're an employee in the eyes of the IRS regardless of what your contract says.
Get Your EIN and Register with State Agencies
Your Employer Identification Number (EIN) is your federal tax ID — the business equivalent of a Social Security Number. You need it before you can run a single payroll. Apply free at IRS.gov and you'll get your EIN instantly online. Takes about 10 minutes.
Federal (IRS) Requirements
- → Apply for EIN at IRS.gov (free, instant)
- → Register for EFTPS (Electronic Federal Tax Payment System)
- → EFTPS is where you deposit withheld payroll taxes
State Requirements
- → Register with your state's department of revenue
- → Register for state unemployment insurance (SUI)
- → Register in every state where an employee physically works — not where your company is incorporated
Pro tip
Remote hiring creates multi-state tax exposure. If you hire someone in Texas and they live in California, you have California payroll tax obligations. Good payroll software handles this automatically — it's one of the biggest reasons not to do payroll manually in a spreadsheet.
Choose a Payroll System
The right payroll system for a startup handles tax calculations, filings, and direct deposit automatically — so you never have to manually compute withholding or remember quarterly deadlines. For companies with any international team members or complex contractor arrangements, Deel is the strongest all-in-one option.
| Tool | Best For | Pricing | International |
|---|---|---|---|
| Deel | Global teams, contractors, EOR | From $49/contractor, $599/EOR employee | 150+ countries |
| Gusto | US-only, small teams | $40/mo + $6/employee | US only |
| Rippling | HR + IT unified platform | $8/user/mo + modules | Limited |
| ADP Run | Scaling companies, 10+ employees | $59/mo + $4/employee | Add-on |
| QuickBooks Payroll | Already using QuickBooks | $45/mo + $5/employee | US only |
Set Up Your Pay Schedule and Direct Deposit
Most startups use bi-weekly (every 2 weeks, 26 pay periods/year) or semi-monthly (twice a month, 24 pay periods/year). Bi-weekly is simpler for hourly workers; semi-monthly is cleaner for salaried employees on monthly budgets. Pick one and stay consistent — changing pay schedules later requires employee notification and sometimes state filing.
Weekly
52 pay periods/year. Highest admin overhead. Good for contractors or hourly-heavy teams.
Bi-Weekly (Recommended)
26 pay periods/year. Industry standard for most startups. Easy to budget and forecast.
Semi-Monthly
24 pay periods (1st and 15th). Cleanest for monthly budgeting. Slightly complex for hourly workers.
Direct deposit setup checklist
- Business bank account: You need a dedicated business checking account. Never pay employees from a personal account.
- ACH authorization: Collect voided checks or bank account + routing numbers from every employee. Your payroll software stores these securely.
- Payroll funding timeline: ACH transfers take 2-3 business days. Submit payroll by Wednesday for Friday pay dates. Some providers offer same-day ACH for a fee.
- Payroll reserve: Keep at least 1.5x your typical payroll amount in your business account at all times. Running out of cash on payroll day is a legal and trust catastrophe.
Configure Tax Withholding and Deductions
This is where most founders get glazed-over eyes. Here's the reality: for every dollar you pay an employee, plan to spend $1.25–$1.40 on total employment costs. The gap between gross salary and what you actually owe — payroll taxes, benefits, and employer contributions — surprises founders who have never hired before.
Employer payroll tax breakdown (per employee)
New hire paperwork checklist
- W-4 (federal): Employees fill this out to tell you their withholding allowances. Must be collected on or before day one.
- State withholding form: Most states have their own equivalent of the W-4. Your payroll software will prompt you.
- I-9 (work eligibility): Must be completed within 3 days of hire. You need to physically verify identity documents — this can't be skipped for US employees.
- New hire reporting: You must report all new hires to your state within 20 days. Most payroll systems do this automatically.
Handle Contractors and International Hires
Contractors and international hires have completely different compliance requirements. Getting these right protects you from IRS penalties for contractors and from legal exposure for international workers who are actually employees.
US Contractors
- → Collect a W-9 before making any payments
- → Issue a 1099-NEC for any contractor paid $600+ in a calendar year
- → 1099s must be distributed by January 31 and filed with IRS by January 31
- → No payroll taxes withheld — contractors pay their own self-employment tax (15.3%)
International Hires — Use Deel
- → Each country has unique labor law, tax, and benefits requirements
- → Employer of Record (EOR) means Deel hires locally on your behalf
- → You pay Deel; they handle local payroll, taxes, and compliance in 150+ countries
- → Eliminates the need to set up a local entity just to hire one engineer
Run Your First Payroll and Stay Compliant
Once your payroll system is configured, your first run is mostly hitting “approve.” But compliance doesn't end there — there's a recurring calendar of filings you need to stay on top of. Good payroll software automates most of this, but you need to know the deadlines exist.
Payroll compliance calendar
Deposit federal payroll taxes to EFTPS. Frequency depends on your tax liability (most small companies are monthly depositors).
File Form 941 (federal payroll tax return) — due April 30, July 31, October 31, January 31. Also file state quarterly returns.
Distribute W-2s to all employees. File W-2s with SSA. Issue and file 1099-NECs for contractors paid $600+.
File Form 940 (annual FUTA tax return). Most companies pay this quarterly if they owe more than $500.
Time tracking tip
If you have hourly employees, use a dedicated time tracking tool like Buddy Punch that integrates directly with payroll. Manual timesheet entry is where payroll errors happen — and the FLSA requires accurate time records for all hourly workers.
Recommended Tools for Startup Payroll
Payroll and time tracking are separate problems — use the right tool for each. Here's what I recommend to the companies I work with.
Deel — Global Payroll & EOR
- + Employees and contractors in 150+ countries
- + Employer of Record — hire globally without a local entity
- + Automated local tax filings and compliance
- + US payroll with W-2s, 941s, and state filings handled
- + Built-in contractor management and 1099 generation
Buddy Punch — Time Tracking
- + Clock in/out via web, mobile, or GPS
- + Integrates directly with most payroll systems
- + Overtime alerts and PTO tracking built in
- + FLSA-compliant time records for every employee
- + Scheduling and shift management included
5 Payroll Mistakes That Cost Startups Real Money
Misclassifying employees as contractors
This is the most expensive mistake in early hiring. If the IRS reclassifies your contractors as employees, you owe back payroll taxes, penalties, and interest — retroactively. The IRS has explicit criteria; if in doubt, classify as an employee and consult a lawyer.
Using payroll taxes as working capital
Withheld payroll taxes belong to the IRS — not to your business. The Trust Fund Recovery Penalty lets the IRS hold founders personally liable for unpaid payroll taxes, even if the company declares bankruptcy. Never touch it.
Missing state registration for remote employees
Every state where an employee physically works creates payroll tax and compliance obligations for your company — regardless of where you're incorporated. A remote hire in a new state means new state registration, new unemployment insurance rates, and potentially new leave laws.
Forgetting the true cost of an employee
A $100k salary costs you $125k–$140k when you factor in employer payroll taxes, workers' comp, unemployment insurance, and any benefits. Budget for the loaded cost before you extend an offer — getting caught underfunded when payroll is due is a terrible position.
Hiring internationally without proper structure
Paying a foreign national as a contractor when they work exclusively for you is permanent establishment risk in many countries. You could inadvertently create a taxable presence in that country and face retroactive corporate taxes. Use an EOR like Deel instead of winging it.
The Single Most Important Thing
Payroll taxes are not optional and they are not deferrable. The IRS can pierce the corporate veil and hold you personally liable. Budget $1.25–$1.40 for every $1.00 of salary, register in every state where your people work, and use payroll software that automates the filings. Everything else is details.