New York Form NYS-45 is the quarterly return every employer with New York payroll uses to report wages, remit state unemployment insurance contributions, and reconcile the income tax already withheld from employee paychecks. One filing covers obligations to both the Department of Taxation and Finance and the Department of Labor. If you have at least one employee on the books, you owe this return every quarter, and you owe it even in quarters when you paid no wages at all.
Who Has to File
Any business paying wages to at least one employee in New York files the NYS-45: corporations, partnerships, sole proprietors with staff, and nonprofits. The obligation starts when you register as an employer with the state and continues until you formally close the account. A quarter with no payroll still requires a zero return. Skipping the zero filing lets the state flag your account as delinquent and issue estimated assessments based on your prior quarters, which carry their own penalties. If wages have stopped for good, close the account instead of filing zeros indefinitely.
Quarterly Deadlines
The return is due on the last day of the month after each calendar quarter ends:
- Q1 (January–March): April 30
- Q2 (April–June): July 31
- Q3 (July–September): October 31
- Q4 (October–December): January 31
These dates apply to both filing the form and paying any unemployment insurance contributions reported on it.1New York State Department of Taxation and Finance. Withholding Tax Due Dates When the due date lands on a weekend or holiday, filing rolls to the next business day.
Do Not Wait Until Quarter-End to Send in Withholding
This is the trap that catches employers who read “quarterly return” and assume they can hold the withheld income tax until they file. They cannot. Once accumulated New York income tax withholding hits $700 within a calendar quarter, you have to file Form NYS-1 and remit those funds within three to five business days after the payroll that crossed the threshold.2New York State Department of Taxation and Finance. Withholding Tax Filing Requirements
Only employers who withhold less than $700 for the entire quarter can send the withheld tax in with the NYS-45 itself. If you already filed an NYS-1 during the quarter and finish with a leftover balance under $700 after your last payroll, that leftover goes on the quarterly NYS-45 rather than triggering another NYS-1.2New York State Department of Taxation and Finance. Withholding Tax Filing Requirements The quarterly return then reconciles the whole picture: NYS-1 payments already made, plus any remaining balance.
Filling Out the Form
Before you start, pull together your Federal Employer Identification Number, your seven-digit New York UI employer registration number, and detailed payroll for the quarter, including each employee’s full legal name, Social Security number, and gross wages.3New York State Department of Taxation and Finance. NYS-45-I Instructions for Form NYS-45
Part A: Unemployment Insurance Contributions
Part A calculates what you owe the state UI fund. Multiply your total UI-taxable wages by your assigned UI contribution rate, which combines a “normal” rate reflecting your claims history with a “subsidiary” rate reflecting the health of the state fund overall. New employers with no claims history get a normal rate of 3.4%.4New York State Department of Labor. Calculating an Employer’s UI Contribution Rate Established employers receive their combined rate in an annual notice from the Department of Labor.
Only wages up to $17,600 per employee per year count as UI-taxable. Once an employee’s year-to-date pay clears that threshold, stop including them in the Part A taxable wage figure. Then calculate the Re-employment Service Fund assessment by multiplying the same taxable wages by 0.075% and enter the result on line 5.5New York State Department of Labor. Unemployment Insurance Rate Information
Part B: Withholding Tax Reconciliation
Part B reconciles the state, New York City, and Yonkers income taxes you withheld during the quarter. Enter total tax withheld on line 13, then subtract the payments you already made through any NYS-1 filings during the quarter.3New York State Department of Taxation and Finance. NYS-45-I Instructions for Form NYS-45 The math shows whether you still owe or overpaid. Mistakes in Part B create mismatches with year-end W-2s and can trigger audits or assessments for unpaid trust fund taxes.
Part C: Employee Wage Detail
Part C is the line-by-line list of every person you employed during the quarter, with Social Security number and gross wages. If you have more than five employees, list the additional workers on Form NYS-45-ATT rather than trying to fit them on the main form. The totals in Part C must match the aggregate figures in Parts A and B; discrepancies are among the most common triggers for automated correction notices.
The Department of Labor uses Part C wage data to determine unemployment benefit eligibility when a former employee files a claim. Understated wages can shrink a legitimate benefit; overstated wages inflate your future contribution rate.
Electronic Filing Is Effectively Required
You must e-file the NYS-45 if you meet all three conditions: you do not use an outside tax preparer, you use a computer to prepare or calculate payroll tax forms, and you have broadband internet access.6New York State Department of Taxation and Finance. Form NYS-45 Quarterly Combined Withholding, Wage Reporting, and Unemployment Insurance Return That description fits nearly every employer. Filing on paper when you should be filing electronically can produce a bill from the state.
Three electronic options exist. The Web File application on the Department of Taxation and Finance website is the most common. You can also upload data in a prescribed file format or use approved third-party payroll software. After submission, the system returns a confirmation number that serves as proof of timely filing, and payment of any balance due typically runs through Electronic Funds Transfer linked to your business bank account.7New York State Department of Labor. NYS-45 Quarterly Reporting
Keep a copy of every return, or the ability to reconstruct the data, for at least four years after the due date.8New York State Department of Taxation and Finance. Publication 72.5 – Electronic Reporting of Form NYS-45 Information Hold records longer if any dispute or audit is open.
Penalties for Missing a Deadline
The failure-to-file penalty stings. If the Department of Labor does not receive your return by the due date, the penalty is the greater of $1,000 or $50 times the number of employees on your last filed quarterly return, capped at $10,000 for any single quarter.9New York State Department of Labor. Failure to File Penalties Even a very small employer faces a $1,000 minimum for one missed quarter, and a 100-employee business could owe $5,000.
Late payment of withholding tax carries a separate penalty of 0.5% of the unpaid amount for each month late, up to 25%. Interest also accrues on the unpaid balance at a rate set by the Commissioner of Taxation and Finance, defaulting to 7.5% per year if no specific rate has been announced. The employer bears these costs and cannot pass them to employees.
Report Employees Only
Only employees belong on the NYS-45. Independent contractors do not go on this form, and their pay is not subject to withholding or UI contributions. Misclassification is one of the most closely scrutinized payroll issues in New York, so verify status before filing rather than after.
The Department of Labor looks mainly at who controls how, when, and where the work happens. Setting the worker’s hours, providing tools, directly supervising, and holding the right to hire and fire all point toward employment. A true independent contractor typically runs an established business, advertises services, carries their own insurance, and sets their own rates.10New York State Department of Labor. Independent Contractors No single factor decides the question, and calling someone a contractor on a 1099 does not make them one. Agreements in which workers waive their employee rights are not valid under New York’s Unemployment Insurance Law.
Fixing a Return After You File
To correct an error, file a new NYS-45 with the “Amended return” box checked for the specific quarter. Complete the entire form, showing both what you originally reported and the corrected figures so the state can see what changed.3New York State Department of Taxation and Finance. NYS-45-I Instructions for Form NYS-45 Each amended return covers one quarter, so multiple bad quarters mean multiple amendments.
One exception saves work: if the only error was using the wrong UI contribution rate on line 4 or the wrong Re-employment Service Fund rate on line 5, you do not need to amend. The Department of Labor adjusts your account on its own. Everything else, from corrected Social Security numbers to adjusted wages or changed withholding, calls for a prompt amendment to limit interest on any underpayment.
Closing the Account
When wages stop for good, file a final NYS-45 within 30 days of your last payroll. Enter the date you stopped paying wages and indicate whether you sold all or part of the business.11New York State Department of Taxation and Finance. Close or End a Business Contact the Department of Labor separately to close your unemployment insurance account. Without that second step, the account stays active, filings are still expected, and estimated assessments start arriving when they do not.
A Note on the MCTMT
Employers with payroll in the New York City metropolitan area may also owe the Metropolitan Commuter Transportation Mobility Tax, which applies to employers who withhold New York State income tax and have more than $312,500 in quarterly payroll for work inside the Metropolitan Commuter Transportation District.12New York State Department of Taxation and Finance. Employers: Metropolitan Commuter Transportation Mobility Tax (MCTMT) The MCTMT is a separate return with its own rate schedule; the NYS-45 does not satisfy it, even though both draw on the same payroll data.