New York Estate Tax Planning
Last updated: 23 Oct 2025 • Author: Alexander Foelsche CPA (US), WP (DE), RE (CH)
New York Estate Tax — Planning
A practitioner’s guide to New York estate tax planning under Tax Law Article 26: aligning federal techniques with NY rules, handling domicile/situs, modeling the basic exclusion amount (BEA) and the NY “cliff”, using NY-only QTIP where appropriate, navigating gift addback timing, and managing valuation/liquidity. NY Art. 26 • ET-706 • ET-133 • ET-117
Planning objectives
Core goals
- Preserve/optimize the BEA and avoid the cliff where feasible.
- Deploy NY-only QTIP or coordinated marital planning to defer/reduce NY tax.
- Manage gift addback exposure (look-back window depends on year of death).
- Control situs for nonresident exposures; maintain clear domicile facts.
- Secure liquidity for the 9-month payment; line up ET-133 and any hardship relief early.
Who this is for
- NY residents near/over the BEA or with cliff risk.
- Nonresidents with NY-situs real/tangible property (incl. co-ops).
- Executors and planners coordinating federal and NY filings (ET-706).
Domicile & situs
Domicile (resident estates)
- Document intent and objective ties (home, voter reg., licenses, business/family/medical ties).
- Keep consistency across filings and records over multiple years.
Situs (nonresident estates)
- NY taxes only NY-situs real/tangible property for nonresidents; most intangibles follow domicile absent a NY business situs.
- Co-op shares are typically intangibles, but transfers usually require ET-117.
BEA & the NY “cliff”
Why it matters
If the NY taxable estate edges just above the BEA, the cliff can cause tax on nearly the entire amount, not just the excess.
- Stress-test values with appraisals and alternate dispositions (charitable/marital).
- Consider disclaimers/timing for bequests to stay within BEA where appropriate.
Planner checklist
- Model with/without gift addback and with different valuation scenarios.
- Use our calculator for order-of-magnitude estimates.
- Document rationale for elections; keep worksheets with ET-706.
Marital strategies & NY-only QTIP
Conformity points
- NY recognizes QTIP concepts but has its own election mechanics on ET-706.
- Portability: NY does not offer state portability; federal portability remains a federal election only.
Design tips
- When no federal 706 is required, a NY-only QTIP election may still defer NY tax—include a compliant election statement and ensure trust income requirements are met.
- Coordinate marital formula clauses (e.g., Clayton/QTIP switches) with the BEA/cliff model.
Gift addback timing
Look-back window
For certain death years, NY requires adding back specified taxable gifts made within a 3-year window (statutory exceptions apply).
- Audit gift history early; retrieve Forms 709 and workpapers.
- Evaluate pre-mortem planning (charitable, marital) to mitigate addback effects.
Interaction with cliff
- Addback can push the estate over the BEA and trigger the cliff.
- Scenario-plan with and without addback to avoid unintended tax spikes.
Valuations, liquidity & timing
Valuation
- Engage qualified NY appraisers for real property and high-value tangibles.
- Align federal schedules (706/712) with NY attachments; reconcile any differences.
Liquidity & extensions
- Payment and return due at 9 months; interest accrues thereafter.
- ET-133: request filing extension (typically up to 6 months) and, if needed, payment relief for undue hardship (may run up to 4 years; interest applies).
- Coordinate any federal §6166/§6161 relief with NY payment planning.
- Prepare ET-117 early if property/co-ops must be transferred or sold.
Planning checklists
Design & documents
- Will/Revocable Trust with marital/QTIP options (consider NY-only QTIP).
- Gift files (709s), beneficiary designations, entity documents.
- Appraisals and NY-specific evidence (co-op documents, deeds, custody/location records).
Execution & filings
- Prepare ET-706 with federal schedules (or pro-forma schedules if no federal filing).
- Model BEA/cliff and gift addback; capture election statements (QTIP) in the filing package.
- Plan cash needs for the 9-month date; submit ET-133 if needed; line up ET-117 for property/co-ops.
FAQs
Hat New York Portability?
Nein. Es gibt keine staatliche Portability. Bundes-Portability bleibt ausschließlich eine federal election.
Kann ich ein NY-QTIP wählen, ohne eine Bundeserklärung abzugeben?
Ja, häufig möglich. NY erlaubt NY-only QTIP auf ET-706; eine saubere Election-Erklärung und QTIP-konforme Treuhandbedingungen sind nötig.
References
- NY Tax Law Article 26 — BEA, addback, QTIP mechanics, nonresident situs.
- NY Department of Taxation & Finance — ET-706 (estate) instructions; ET-133 (extension to file/pay); ET-117 (release of lien).
- IRS Form 706/706-NA & Instructions — federal base, valuation, marital/QTIP, §6166 references.

