Frequently asked questions
- Is ADP’s paycheck calculator free?
- Yes. ADP publishes free salary and hourly paycheck calculators that anyone can use without an account. They are separate from ADP’s paid payroll and HR platform, which businesses subscribe to for running payroll.
- Is PayslipIQ a payroll provider like ADP?
- No. ADP is a full payroll and HR platform that employers use to pay staff. PayslipIQ does not run payroll and is not an employer tool. It is a free educational explainer that helps an individual worker read and understand a pay stub.
- What does PayslipIQ do that ADP’s free calculator does not?
- PayslipIQ explains every line in plain English — federal income tax, Social Security, Medicare, state income tax, state worker contributions (CA SDI, NY PFL, NJ FLI and similar), and local taxes — rather than only returning a net figure. It also offers an AI pay-stub upload explainer, dedicated city pages, and an open methodology page.
- Which is more accurate?
- Both use the IRS Publication 15-T withholding method and published state rates, so for a standard scenario the results are close. Differences usually come from edge cases such as multi-state work, supplemental wages, or mid-year W-4 changes. Treat any calculator result as an estimate and verify with your payroll team.
- Should my employer use PayslipIQ instead of ADP?
- No — they do different jobs. ADP (or another payroll provider) runs the actual payroll. PayslipIQ helps the employee understand the pay stub that payroll produces. They are complementary, not substitutes.
- Does PayslipIQ cover all 50 states like ADP?
- Yes. PayslipIQ covers all 50 states plus DC, plus 11 jurisdictions with explicit employee worker contributions and dedicated pages for major metros.
USA · COMPARISON · 2026 · Educational only
PayslipIQ vs ADP
ADP is one of the largest payroll and HR providers in the US, and it publishes a free paycheck calculator. PayslipIQ is a free, independent pay stub explainer built for the worker, not the employer. Here is an honest, side-by-side comparison.
In plain English
ADP and PayslipIQ are different kinds of tool. ADP is a payroll platform whose free calculator returns a take-home estimate; it is built around running payroll for employers. PayslipIQ is a free educational explainer that walks a worker through every line of a pay stub in plain English, with an AI upload tool, city pages, and an open methodology. Use ADP’s calculator for a quick number; use PayslipIQ to understand it.
Side-by-side
| Feature | PayslipIQ | ADP (free calculator) |
|---|---|---|
| Primary purpose | Explain a pay stub to a worker | Estimate take-home; promote ADP payroll |
| All 50 states + DC | Yes | Yes |
| Plain-English line-by-line explainer | Yes — every line | Limited |
| AI pay-stub upload explainer | Yes (waitlist) | No |
| State worker contributions explicit (SDI/PFL/PFML/TDI/FAMLI) | 11 jurisdictions encoded | Partial |
| City-specific pages | Major metros | No |
| Open methodology with citations | /methodology | Not published |
| Runs actual payroll for employers | No | Yes — core product |
| Free, no account required | Yes | Yes for the calculator |
What each tool does best
ADP is an enterprise-grade payroll and HR provider. If you run a business and need to actually pay employees, file payroll taxes, and stay compliant, ADP (or a comparable provider) is the right category of tool. Its free public paycheck calculator is accurate and fast for a quick take-home estimate.
PayslipIQ is built around one question: “I do not understand my pay stub.” It is not a payroll system and never will be. Every deduction line is explained in plain language, the AI Pay Stub Checker reads an uploaded stub and returns a written walkthrough, and the methodology is public.
When to use which
- Use ADP if you are an employer running payroll, or you just want a fast take-home number from a well-known calculator.
- Use PayslipIQ if you are a worker trying to understand why your paycheck looks the way it does, or you want a line-by-line explanation of an actual stub.
- Use both for a cross-check: estimate with one, understand with the other.
What we do not claim
PayslipIQ is educational only. It is not payroll software, and it is not a substitute for advice from a CPA, EA, payroll specialist, or attorney. ADP is a registered trademark of its owner; PayslipIQ is independent and not affiliated with ADP. Numbers are estimates — real paychecks depend on employer payroll settings, mid-year W-4 changes, multi-state nexus, benefits elections, and garnishments.
Common questions
- Is ADP’s paycheck calculator free?
- Yes. ADP publishes free salary and hourly paycheck calculators that anyone can use without an account. They are separate from ADP’s paid payroll and HR platform, which businesses subscribe to for running payroll.
- Is PayslipIQ a payroll provider like ADP?
- No. ADP is a full payroll and HR platform that employers use to pay staff. PayslipIQ does not run payroll and is not an employer tool. It is a free educational explainer that helps an individual worker read and understand a pay stub.
- What does PayslipIQ do that ADP’s free calculator does not?
- PayslipIQ explains every line in plain English — federal income tax, Social Security, Medicare, state income tax, state worker contributions (CA SDI, NY PFL, NJ FLI and similar), and local taxes — rather than only returning a net figure. It also offers an AI pay-stub upload explainer, dedicated city pages, and an open methodology page.
- Which is more accurate?
- Both use the IRS Publication 15-T withholding method and published state rates, so for a standard scenario the results are close. Differences usually come from edge cases such as multi-state work, supplemental wages, or mid-year W-4 changes. Treat any calculator result as an estimate and verify with your payroll team.
- Should my employer use PayslipIQ instead of ADP?
- No — they do different jobs. ADP (or another payroll provider) runs the actual payroll. PayslipIQ helps the employee understand the pay stub that payroll produces. They are complementary, not substitutes.
- Does PayslipIQ cover all 50 states like ADP?
- Yes. PayslipIQ covers all 50 states plus DC, plus 11 jurisdictions with explicit employee worker contributions and dedicated pages for major metros.
Try PayslipIQ
PayslipIQ provides educational information and estimated calculations only. It does not provide tax, legal, financial, accounting, employment, benefits, or payroll advice. PayslipIQ is not a CPA firm, law firm, financial advisor, payroll provider, or tax authority. Always verify your paycheck, deductions, withholdings, and tax position with your employer's payroll department, a qualified CPA, the IRS, your state tax authority, or another appropriately qualified professional. Calculations are estimates; your actual paycheck may differ based on factors specific to your employer, location, benefits elections, and personal tax situation.