Introduction
If you own a small business in New York, paying too much in state taxes can take a big bite out of your profits. The NY Small Business Deduction, also called the Small Business Subtraction Modification, can help you save money. It reduces your taxable income if your business meets certain income and eligibility rules. Understanding how it works can put more money back into your business.
This guide will walk you through what the deduction is, who qualifies, how much you can claim, and tips for using it correctly.
What the NY Small Business Deduction Actually Is
Simple definition
The NY Small Business Deduction allows eligible businesses to subtract part of their income from their New York taxable income. It applies to sole proprietors, partnerships, LLCs, and S-Corps. By reducing taxable income, your state taxes decrease, giving your business more funds to grow or reinvest.
How the subtraction modification works in New York’s tax system
Officially, this deduction is called the Small Business Subtraction Modification. The subtraction modification code sets the rules for how much you can deduct. It is calculated based on your New York-sourced business income and may interact with other deductions and credits. Keeping accurate records is essential to claim it properly.
Recent Updates: From 3% to 15% Deduction
What changed
Previously, businesses could only deduct 3% of their eligible income. Now, New York has increased the rate to 15%. This change applies to tax year 2024 and is part of the state’s ongoing efforts to support small businesses.
Why this update is important for NY businesses
A 15% deduction rate can save a small business thousands of dollars, especially for those with higher incomes. The update makes it easier for small business owners to reduce taxes legally while staying compliant with New York State tax rules.
Who Qualifies for the NY Small Business Deduction
Eligibility requirements
To qualify, businesses must meet certain income limits and be properly registered in New York. Both income and gross receipts are considered.
Types of businesses that qualify
Sole proprietors, partnerships, LLCs, and S-Corps are all eligible.
Sole proprietors qualify if their NYS business income is under $250,000 and gross business income is under $1.5 million. Partnerships, LLCs, and S-Corps are also included, as long as they meet the same thresholds.
Income thresholds
NYS business income must stay below $250,000, and gross business income must not exceed $1.5 million.
New York–sourced gross receipts limit
The deduction only applies to income earned from business activities in New York. Out-of-state income does not count.
How the Deduction Is Calculated
How the 15% rate applies
The 15% deduction rate is applied to your eligible New York sourced business income. For example, if your business earned $100,000 in NY income, you could deduct $15,000 from your taxable income.
Examples of eligible business income
Eligible income can include profits reported on federal Schedule C for sole proprietors and business income reported on state tax returns for partnerships, LLCs, and S-Corps.
What counts as “New York business income”
Only income derived from business activities conducted in New York qualifies. Income earned outside the state or from investments typically does not qualify.
What You Can Deduct: Understanding Business Expenses
Ordinary and necessary expenses
Business expenses must be ordinary and necessary to be deductible. Ordinary means common in your type of business. Necessary means helpful and appropriate for running your business.
Common deductible expenses for NY small businesses
Home office expenses, vehicle and travel costs, employee wages and benefits, equipment and depreciation (Section 179), and interest on business loans can all be deducted.
How federal deductions interact with NY rules
Some deductions claimed on your federal tax return may also reduce New York taxable income, but state rules can differ. It’s important to track and report them correctly.
How to Claim the NY Small Business Deduction
Forms needed
You claim the deduction using Form IT-225 on your New York state tax return.
How to report subtraction modifications
Follow the instructions carefully on the form. Report your eligible income, the deduction amount, and any adjustments required.
Documentation and record-keeping requirements
Keep detailed records of all income and expenses, including invoices, receipts, and bank statements. Proper documentation ensures your deduction is valid and protects against audits.
Interaction With Other NY Tax Incentives
Pass-Through Entity Tax (PTET)
Some businesses may also qualify for the Pass-Through Entity Tax. This is separate from the small business deduction and may sometimes provide a better tax advantage depending on your business structure.
When to claim PTET vs NY small business deduction
The choice depends on which option offers the most tax savings. A tax professional can help evaluate your situation.
Other deductions or credits that may overlap
Check for other available credits or deductions, such as investment or employee-related credits, to avoid claiming the same benefit twice.
Common Mistakes and Compliance Tips

Errors business owners often make
Common errors include miscalculating eligible income, claiming out-of-state income, and missing documentation requirements.
Documentation issues
Failing to keep receipts, invoices, or proper expense records can cause the deduction to be denied.
Best practices to avoid penalties or disallowance
Maintain organized records, double-check income thresholds, and consult a tax professional when needed.
Benefits and Limitations

When this deduction offers the biggest advantage
Businesses with steady New York income and ordinary business expenses see the most benefit from the deduction.
Situations where businesses may not benefit
If your business earns most income outside New York, or if the income is below a certain threshold, the deduction may have a limited effect.
Tax planning considerations
Plan ahead to maximize the deduction each year and integrate it with other tax-saving strategies.
Practical Tips for NY Small Business Owners

How to maximize tax savings
Track all eligible expenses, claim the full 15% deduction on eligible income, and stay up-to-date on New York tax law changes.
When to consult a tax professional
A professional can help ensure you meet all qualifications, maximize deductions, and avoid errors that could trigger audits.
Planning ahead for next year’s deductions
Keep records organized throughout the year and review your business income periodically to plan your deductions strategically.
Conclusion
The NY Small Business Deduction is a powerful tool for reducing state taxes for eligible New York businesses. By understanding eligibility, keeping proper records, and claiming deductions correctly, small business owners can maximize their tax savings and reinvest in growth.
FAQ: NY Small Business Deduction
What is the NY Small Business Deduction?
The NY Small Business Deduction allows eligible New York businesses to reduce their taxable income, lowering state taxes. It applies to sole proprietors, partnerships, LLCs, and S-Corps.
How much can a small business deduct in New York?
Eligible businesses can deduct up to 15% of their New York business income. The exact amount depends on business type and income level.
Who qualifies as a small business in New York?
Sole proprietors, partnerships, LLCs, and S-Corps with NYS business income under $250,000 and gross business income under $1.5 million qualify.
What expenses can be claimed under this deduction?
Deductible expenses include home office costs, vehicle and travel, employee wages, equipment depreciation, and interest on business loans. Keep proper records.
How do I claim the NY Small Business Deduction?
Use Form IT-225 on your NY state tax return. Maintain invoices, receipts, and bank statements to validate your deduction.
How does this deduction affect other New York tax benefits?
It may interact with other incentives like the Pass-Through Entity Tax (PTET). Consult a tax professional to determine the best approach.
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