Payroll Tax Compliance in New York: NYS-45, MCTMT, and Penalties

New York payroll tax compliance means handling federal withholding, Social Security and Medicare, and FUTA on top of a state-specific stack: New York income tax withholding (plus New York City or Yonkers tax where it applies), state unemployment insurance with a Reemployment Service Fund add-on, the Metropolitan Commuter Transportation Mobility Tax inside the twelve-county transit district, and employee-funded payroll deductions for statutory disability benefits and Paid Family Leave. Each piece has its own registration, deposit schedule, and penalty regime, and the state’s underpayment interest rate compounds daily.

What You Withhold and Pay on Each Paycheck

At the federal level, employers and employees each pay 6.2% of wages toward Social Security up to the 2026 wage base of $184,500, plus 1.45% each for Medicare with no cap.1Social Security Administration. Contribution and Benefit Base An additional 0.9% Medicare tax comes out of employee wages above $200,000 ($250,000 for joint filers), and employers do not match that portion. Federal income tax withholding follows Publication 15-T and the employee’s Form W-4.2Internal Revenue Service. Federal Income Tax Withholding Methods (Publication 15-T) FUTA is employer-only at 6.0% of the first $7,000 of each employee’s wages, and timely state unemployment payments earn a credit of up to 5.4%, dropping the effective rate to 0.6%. New York is not currently a credit reduction state.3U.S. Department of Labor. FUTA Credit Reductions

New York State income tax withholding is required under Tax Law Article 22 for any employer maintaining an office or doing business in the state, for employees who live or work here.4New York State Senate. New York Code TAX – Requirement of Withholding Tax from Wages Amounts come from the state tax tables and the employee’s Form IT-2104, which captures residency, marital status, and allowances.5Department of Taxation and Finance. Instructions for Form IT-2104 Employee’s Withholding Allowance Certificate If your worker lives in New York City, you also withhold NYC resident income tax; a Yonkers resident triggers the Yonkers surcharge. Both flow through the same payroll process and reporting forms as state withholding, and the IT-2104 keys off the employee’s home address, so accurate residence information matters.

State Unemployment Insurance

New York’s SUI is an employer-paid tax funding benefits for workers who lose their jobs through no fault of their own. New employers in 2026 pay a combined rate of about 4.1%, made up of a 3.4% normal contribution rate plus subsidiary charges and a 0.075% Reemployment Service Fund assessment.6Department of Labor. Unemployment Insurance Rate Information Once you have an experience rating, your rate adjusts based on former employees’ benefit claims against your account. Both the SUI contribution and the RSF apply to wages up to the taxable wage base, which starting in 2026 permanently adjusts each January 1 to 18% of the state average annual wage.7New York State Department of Labor. NYS-45 Quarterly Reporting

Metropolitan Commuter Transportation Mobility Tax

The MCTMT under Tax Law Article 23 applies to employers operating within the Metropolitan Commuter Transportation District: the five NYC boroughs plus Nassau, Suffolk, Westchester, Rockland, Putnam, Orange, and Dutchess counties.8New York State Senate. New York Tax Law Article 23 – Metropolitan Commuter Transportation Mobility Tax You owe the tax for any calendar quarter in which your MCTD payroll expense exceeds $312,500.9New York State Department of Taxation and Finance. Metropolitan Commuter Transportation Mobility Tax (MCTMT)

Rates depend on the zone where the employee works and total payroll for that quarter. Zone 1 covers the five boroughs; Zone 2 covers the surrounding seven counties. For quarters beginning on or after July 1, 2025, Zone 1 rates run 0.055% (payroll up to $375,000), 0.115% ($375,001 to $437,500), 0.60% ($437,501 to $2,500,000), and 0.895% above $2,500,000. Zone 2 tracks the first two tiers but tops out lower: 0.34% and 0.635% at the upper brackets.9New York State Department of Taxation and Finance. Metropolitan Commuter Transportation Mobility Tax (MCTMT) Employers with staff in both zones calculate each zone’s liability separately. Two errors show up repeatedly here: failing to split payroll between zones, and assuming no tax is owed when the quarterly total lands just under the threshold in one quarter but over it in another.

Disability Benefits and Paid Family Leave Deductions

New York requires employers to carry disability benefits insurance and Paid Family Leave coverage. Both are primarily employee-funded through payroll deductions, but you are responsible for securing the coverage, running the deductions, and remitting them to the carrier.

The Disability Benefits Law covers off-the-job injury or illness. Coverage comes through a private insurer, the State Insurance Fund, or approved self-insurance. Employees contribute up to $0.60 per week through payroll deduction; the employer picks up any remainder. The Workers’ Compensation Board treats nearly everyone providing services to a for-profit business as a covered employee.10New York State Workers’ Compensation Board. Violations of Workers’ Compensation Law (Liability and Penalties)

For 2026, PFL employee contributions are 0.432% of gross wages per pay period, capped at a maximum annual contribution of $411.91, based on a state average weekly wage of $1,833.63.11New York Paid Family Leave. New York Paid Family Leave Updates for 2026 Failing to carry PFL coverage draws the same penalties as failing to carry workers’ compensation insurance.

Workers’ Compensation and Payroll

Workers’ comp is not a payroll tax, but the premium is calculated from total payroll and job classification codes, so it stands or falls on the same records. Every New York employer must carry coverage for employees, including part-time, seasonal, temporary, and even unpaid workers such as volunteers and family members. Understating payroll or misclassifying job duties to reduce premiums exposes the business to fines of up to $2,000 for every 10-day period of noncompliance, or twice the cost of the compensation that should have been secured, with criminal fines ranging from $1,000 to $50,000.10New York State Workers’ Compensation Board. Violations of Workers’ Compensation Law (Liability and Penalties)

Registering and Onboarding Paperwork

Before your first payroll, get a Federal Employer Identification Number from the IRS. Then register with New York on Form NYS-100, the combined registration for unemployment insurance, withholding, and wage reporting.12New York State Department of Labor. Register for Unemployment Insurance The form asks for the legal business name, physical address, officer or partner information with Social Security numbers, and the first calendar quarter in which you paid or expect to pay $300 or more in wages. That $300 figure triggers unemployment insurance liability.13New York State Department of Labor. New York State Employer Registration for Unemployment Insurance, Withholding, and Wage Reporting

For each new hire, collect the full legal name, current address, Social Security number, a signed federal Form W-4, and a completed Form IT-2104 for state and local withholding.5Department of Taxation and Finance. Instructions for Form IT-2104 Employee’s Withholding Allowance Certificate Form I-9 verifies employment eligibility: the employee completes Section 1 no later than the first day of work, and you complete Section 2 within three business days by physically examining acceptable identity and work authorization documents.14U.S. Citizenship and Immigration Services. Employment Eligibility Verification Assembling this paperwork before the first pay run avoids the rushed withholding errors that follow when you try to build a payroll around missing forms.

Worker Classification

Treating employees as independent contractors is one of the costliest payroll mistakes in New York. If the state or IRS reclassifies a contractor as an employee, you owe back taxes for every period worked, including the employer share of FICA, FUTA, SUI, and all the income tax withholding you should have collected. Interest and penalties stack on top.

The IRS weighs three categories: behavioral control (do you direct what work is done and how), financial control (who bears expenses, who provides tools, how the worker is paid), and the nature of the relationship (written contracts, benefits, permanence, and whether the work is a core part of your business).15Internal Revenue Service. 16New York State Department of Taxation and Finance. Withholding Tax Due Dates If your total withholding for an entire calendar quarter stays under $700, you skip the NYS-1 and just report the amount on the quarterly return. Filing is done through Business Online Services, and payment is typically an ACH debit from a business account. The system issues a confirmation number when the filing is complete, and that receipt is your proof of timely filing.17New York State Department of Taxation and Finance. Form NYS-1, Return of Tax Withheld

Form NYS-45 is the quarterly combined return covering withholding, wage reporting, and unemployment insurance in one filing.7New York State Department of Labor. NYS-45 Quarterly Reporting Electronic filing is mandatory if you use a computer to prepare your tax forms and have broadband access.18New York State Department of Taxation and Finance. Form NYS-45, Quarterly Combined Withholding, Wage Reporting, and Unemployment Insurance Return The return is due the last day of the month after each quarter ends: April 30, July 31, October 31, and January 31.

Recordkeeping

New York Labor Law Section 195 requires payroll records for each employee to be kept at least six years.19New York State Senate. New York Code LAB – Notice and Record-Keeping Requirements Records must include the employee’s name, address, Social Security number, dates of employment, gross wages, hours worked each day and week for non-exempt employees, and amounts withheld. Keep the signed wage notices given at hiring for the same six years. The Workers’ Compensation Board separately requires four years of records covering employee count, classification, accident information, and wages paid.10New York State Workers’ Compensation Board. Violations of Workers’ Compensation Law (Liability and Penalties)

Penalties and Interest

New York’s underpayment interest rate is the federal short-term rate plus 5.5 percentage points, with a 7.5% floor. For the first quarter of 2026 the effective rate is 9.5%, compounding daily.20New York State Department of Taxation and Finance. Interest and Penalties Where the Department of Taxation and Finance determines that an underreporting resulted from negligence rather than fraud, the penalty is 5% of the underpayment plus 50% of the interest owed on that underpayment. Late filing draws its own charge, and failing to file electronically when required is a separate penalty. Multiple quarters of exposure add up quickly, which is why catching a mistake in the current quarter and correcting it costs far less than having an auditor find the same mistake two years later.