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How Collaboration Caught Hidden Tax Opportunities

Understanding Income in Respect of a Decedent (IRD): The Double-Tax Trap Lurking in Your Estate Plan

Tax season can feel routine—gather the forms, send them off, and hope for the best. But last year, a new client reminded me why the story behind those forms matters far more than the numbers on the page.

She was a separated-but-still-married mom with kids, earning income as a CRNA via a 1099, and living in New York City. She'd always filed as Married Filing Separately (MFS), and her previous returns reflected that. When she came to me, we dug into her full situation: living arrangements, custody details, support provided, and more.

I summarized everything using a detailed intake template I share with my collaborating CPA—she's the tax authority who prepares the returns, and I run client scenarios by her to make sure we're aligned before anything gets filed. Our collaboration has been fantastic.

After reviewing together, we confirmed she qualified for Head of Household status. That one shift dramatically changed her filing picture, unlocking better rates and deductions. A meaningful win—but it was just the start.

Once the CPA drafted the initial return based on the forms and our notes, I reviewed it line by line with the client. We walked through areas that needed clarification, and that's when several "hidden" items surfaced—things that weren't obvious from the 1099s or tax software alone, and that she hadn't thought to mention because "it was just a rollover" or "the forms handled it."


What We Caught Together

QTP (529 Plan) Distributions — Rollover A distribution appeared on Form 1099-Q looking potentially taxable. In reality, it was a tax-free rollover to another qualified plan (permitted once per 12 months per beneficiary).1 Without context, it could have been reported as taxable income unnecessarily.

Roth IRA Conversions and Form 8606 The 1099-R reported the full conversion amount as taxable, but she had nondeductible basis from prior contributions as part of a backdoor Roth IRA strategy. Properly tracking that basis on Form 8606 minimized—and in part eliminated—the taxable portion. Tax software often mishandles this without the full contribution history explained upfront.2

Foreign Tax Credits and Form 1116 She held international investments for diversification, and foreign taxes paid qualified for credits. We identified multiple sources, reviewed gross dividend income from each, and ensured the credits were fully claimed (or carried over properly)—preventing a missed benefit she had intentionally built into her portfolio.3

State-Specific 529 Rules (New York) Contributions to her NY 529 plan—including rollovers into the plan from another state's 529—qualified for a New York state tax deduction of up to $5,000 for single filers.4 This benefit doesn't appear automatically on federal forms, and knowing to flag it saved her real money on her state return.

Solo 401(k) Contributions As a self-employed CRNA, she had contributed to a Solo 401(k). These contributions often lack dedicated reporting forms, so confirming exact amounts and deadlines required direct communication—there's no automatic reporting without this kind of collaboration.

Money Market Funds with Government Obligations Interest from U.S. government securities held in her money market funds are exempt from New York state and local taxes. Brokerage statements don't always break this out clearly, but reviewing her supplemental tax documents let us apply the subtraction and reduce her state bill.5

HSA Contributions — Post-Tax vs. Pre-Tax She had made after-tax contributions to her HSA (no employer pre-tax option available), which are deductible above-the-line. A straightforward deduction that would have been missed entirely without asking about the specifics.6

FSA and the Child and Dependent Care Credit Her dependent care FSA reimbursements reduced the pool of eligible expenses for the Child and Dependent Care Credit. Coordinating these correctly avoided double-dipping errors that could have triggered unexpected tax on FSA amounts.7

Mid-Year Change of Main Home Her move during the year affected residency timing, with potential implications for New York state and local tax obligations. Walking through the exact timeline confirmed the correct treatment—and any associated savings.

401(k) / IRA Rollover A rollover appeared on her forms as a potentially taxable distribution. It was a direct rollover and entirely tax-free. Proper context ensured non-taxable reporting and avoided unnecessary penalties.


Why This Matters

None of these were proactive mid-year strategies. They were straightforward reporting corrections that surfaced because I knew her full story and could share the right context with the CPA in advance.

This is the collaborative model: I provide the client overview and notes on expected forms and issues; the CPA drafts the return as the expert; I then review with the client for accuracy and completeness. It catches what slips through—even with excellent software and a sharp preparer.

Her reaction when we finished? "I had no idea these details even mattered."

As a financial planner, I had the privilege of knowing that tax-relevant parts of her story —something neither a tax preparer nor a client can be expected to surface on their own.

I'm sharing this (anonymized, of course) because it illustrates what accurate tax filing actually looks like: returns that reflect your real life, not just the forms. Whether you're proactive all year or catching up at the last minute, a second set of informed eyes can make a meaningful difference.

If your tax return ever leaves you wondering "Is this really my full picture?"let’s talk.


Disclaimer: This is general information based on a real but anonymized client experience and does not constitute personalized tax or financial advice. Tax rules are subject to change; always consult a qualified tax professional and financial planner for guidance specific to your situation.
1. IRS Topic No. 313 — Qualified Tuition Programs (QTPs): tax-free rollovers are permitted under specific rules.
2. IRS Instructions for Form 8606 — tracks nondeductible basis for Roth conversions; common software errors occur without full contribution history.
3.IRS Form 1116 Instructions — credits for foreign taxes paid; requires manual review for multi-source complexity. 
4. New York State Dept. of Taxation and Finance Advisory Opinion TSB-A-05(7)I (2005) confirms that rollovers from another state's 529 into a New York 529 are treated as deductible contributions for the state subtraction modification (up to $5,000 for single filers / $10,000 for joint filers).
5. Brokerage supplemental tax documents — government obligation percentages for state tax exemption.
6.  IRS Publication 969 — after-tax HSA contributions are deductible above-the-line. 
7. IRS Child and Dependent Care Credit FAQs — coordination required to prevent double-counting of FSA reimbursements and credit-eligible expenses.
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