Yes, if you’re selling taxable goods or services. New York uses destination-based sales tax, which means you charge the rate where your customer is located, not where your business is based.

On Long Island, that means two rates to know. Nassau County’s combined sales tax is 8.625%. Suffolk County’s is 8.75%. The difference is small on any single transaction, but it needs to be handled correctly on your returns.

That said, most service businesses on Long Island don’t actually collect sales tax. Landscaping, cleaning, consulting, property management, and marketing services are generally not taxable in New York. If your work falls into these categories, you don’t charge sales tax regardless of which county you’re in. The destination-based rule only matters when you’re selling something that’s actually taxable.

Some services are taxable, though. Certain repair and installation work, interior decorating, and information services fall under New York’s sales tax rules. If you’re selling physical products alongside your services, those are typically taxable too. Not sure whether what you sell is taxable? Check with your accountant or look it up on the New York State Department of Taxation and Finance website.

For businesses that do collect sales tax, here’s how the destination rule works in practice. Say your business is based in Nassau but you complete a job in Suffolk. You charge the Suffolk rate of 8.75%. A Suffolk-based business doing work in Nassau charges the Nassau rate of 8.625%. The customer’s location determines the rate, not yours.

This matters most for home and property service businesses that cross county lines regularly. If you’re sending crews to homes in both Nassau and Suffolk, your invoicing system needs to handle both rates. QuickBooks can manage multiple tax rates. You select the correct one when creating each invoice based on where the work was performed.

Getting this wrong creates problems at filing time. If you’ve been charging one flat rate across all jobs, your sales tax return won’t match what you actually collected. Proper bookkeeping for service based businesses and nonprofits catches these discrepancies before they become issues with the state. The fix is simple but tedious once you’re behind.

If you only work in one county, keep it simple. Set up that county’s rate and apply it to every taxable sale. If you’re regularly crossing between Nassau and Suffolk, build the habit of checking the service address before invoicing. A few seconds of attention upfront prevents reconciliation headaches later.