The 12 months after closing are when your tax bill is most volatile. Seller exemptions drop, your own register, escrow adjusts, and assessors may or may not reassess. Here's exactly what to expect — and when.
You're eligible only for Basic STAR. You'll see a ~$300-$700/yr reduction once registered. Expect first-year bill ≈ seller's bill + $400-$1,200 (lost STAR/Senior/Vet of seller, gained partial Basic STAR for you). After 12-18 months you stabilize at seller's bill + ~$200-$500.
You qualify for Enhanced STAR + Senior Citizens exemption (income tier varies by town). Combined savings: $1,500-$5,000/yr depending on home value and town. After registration cycle (typically by next March), your bill stabilizes well below the seller's.
Eligible for STAR + Alternative Veterans (15% + 10% = 25% reduction in assessed value). Stack with STAR for combined savings of $2,000-$4,000+/yr depending on town's veteran exemption maximums. File Form RP-458-a immediately with your assessor.
Depends on your closing date and county. Nassau bills run on a January-July first half, July-January second half schedule. Suffolk bills run on a December-May first half, May-November second half. If you close mid-cycle, you'll typically pay a prorated portion at closing.
Eventually. Most servicers do an annual escrow analysis. If your bill changes significantly (because exemptions dropped off), you may end up with a shortage at year-end. Most lenders let you make up the shortage over 12 months or pay a lump sum.
In theory yes, in practice rarely. Nassau reassesses every property every year regardless of sale. Suffolk towns typically reassess on a multi-year cycle. Sale price is one input but not the only one — and most LI towns explicitly do not equate purchase price with assessment.
Look at the seller's tax bill (in the closing paperwork). Each exemption line shows the dollar reduction. Compare to your projected bill on our buyer calculator. If you're missing an exemption you qualify for (Veteran, Senior, etc.), apply with your assessor.
Enter any Long Island address to see the median bill for the district, your projected bill if you bought today, and how exemptions roll off after a sale.
Open the calculator →Grievance deadlines, STAR limit updates, new exemption laws. One short email, only when something actionable happens. Unsubscribe in one click.
Subscribe →Last verified: 2026-05-11. Tax rules change; we re-verify each page quarterly.
Estimates and educational content only — not legal, tax, or financial advice. Verify with your county or town receiver, an attorney, or a CPA before making financial decisions.