Transfer tax

New York taxes property conveyances twice over: the city's real property transfer tax and the state's, each with rates that vary by property type and price tier, filed with returns that accompany recording. The filings are why transfer records carry structured price data — the tax return alongside the deed states consideration in a form built for enforcement.

For analysis, transfer-tax treatment is context on the price: exemptions and nominal-consideration codings flag the non-market transfers, and the returns' declarations (property class, relationship representations) enrich what the deed alone says. The mansion-tax tier on high-price residential purchases and the mortgage recording tax on financings are the same machinery's siblings.