Maryland Divorce: $5M Estate Tax + 10% Inheritance Tax Math

Maryland is unusual in two ways for divorce financial planning. First, it is the only US state that imposes both an estate tax and an inheritance tax — the estate tax kicks in at $5M (Tax-Gen §7-309), and the inheritance tax hits 10% on transfers to collateral heirs (Tax-Gen §7-204). Second, Maryland Family Law §8-203 is an equitable distribution statute that explicitly excludes inherited property from marital property under §8-201(e)(3). Those two facts mean that for divorcing couples with $1M+ in assets, the post-decree estate plan is not an afterthought — it is a six-figure variable.

The quick answer: Maryland is the only state with both an estate tax ($5M exemption) and a 10% inheritance tax. In a $1M+ MD divorce, equitable distribution under §8-203 must be coordinated with both — or your post-decree estate plan triggers a six-figure surprise.

How Maryland equitable distribution actually works under §8-203

Maryland Family Law §8-203 directs the court to divide marital property based on 11 statutory factors, including the duration of the marriage, the contributions (monetary and non-monetary) of each spouse, the value of all property interests of each spouse, the economic circumstances of each spouse at the time the award is made, and the circumstances that contributed to the estrangement. Unlike community property states, Maryland does not presume a 50/50 split. The court has broad discretion to award property based on what is equitable, which in long marriages with significant disparity often produces a 55/45 or 60/40 outcome rather than a strict half.

Marital property under §8-201(e) includes all assets acquired during the marriage by either spouse, regardless of title. It excludes:

• Property acquired before the marriage
• Property acquired by inheritance or gift from a third party
• Property excluded by valid agreement (prenuptial or postnuptial)
• Property directly traceable to any of the above

The third-party inheritance exclusion is where MD divorces frequently get complicated. If your spouse inherited $800K from a parent in 2019 and kept it in a separate brokerage account in their sole name, that account and its passive appreciation stay with them in the divorce. If they deposited the $800K into a joint account in 2020, commingling typically destroys the separate-property protection and converts the entire balance to marital property.

The Maryland inheritance tax: why it matters in divorce planning

Maryland imposes a 10% inheritance tax under Tax-Gen §7-204 on certain transfers from a decedent to a beneficiary. The tax applies to transfers from someone who died domiciled in Maryland (or who owned MD property at death). Critically, the tax is based on the relationship between the decedent and the beneficiary, not the value of the estate.

Under Tax-Gen §7-203, the following beneficiaries are EXEMPT from MD inheritance tax:

• The decedent's spouse
• The decedent's children, stepchildren, grandchildren, and other lineal descendants
• The decedent's parents and other lineal ancestors
• The decedent's siblings (added in 2000)
• Spouses of any of the above
• Surviving spouses of deceased lineal descendants
• Qualified charities

The 10% tax under §7-204 applies to transfers to:

• Nieces, nephews, cousins, and more distant relatives
• Unrelated individuals (friends, partners, godchildren)
• Most trusts where the beneficiaries are non-exempt parties

This matters in divorce because your post-decree estate plan likely needs to be rewritten. If you previously named your spouse as primary beneficiary and your spouse's sister as contingent beneficiary, the post-divorce update has to confront the 10% MD inheritance tax that would apply if assets pass to the contingent beneficiary. Most divorcing Marylanders shift to leaving everything to children or grandchildren — exempt under §7-203 — but the analysis becomes much more involved when minor children require a guardian or trust structure.

The Maryland estate tax at $5M: the second tax to plan around

Separate from the inheritance tax, Maryland imposes a state estate tax under Tax-Gen §7-309 on estates exceeding $5M. The rate is graduated up to 16% on amounts above $5M. The MD estate tax is NOT integrated with the inheritance tax — both can apply to the same estate, though credits exist to prevent strict double taxation on the same transfer (Tax-Gen §7-309(b)(5)).

For divorcing couples with combined assets of $5M+, the post-decree estate plan must account for the $5M MD exemption per individual. Unlike the federal estate tax exemption ($13.99M in 2026), Maryland does NOT permit portability of unused estate tax exemption between spouses. If you and your spouse held $8M in combined assets and divorced equally, you each end up at $4M — under the MD exemption and theoretically safe. But appreciation over the next decade can push either of you above $5M, triggering MD estate tax at death.

Worked example: Bethesda couple, $4.2M marital estate

Lisa and David, both 58, are divorcing in Montgomery County after 22 years of marriage. Their marital estate breaks down as:

• Marital home in Bethesda: $1.6M (purchased 2008 for $850K, fully paid off)
• David's 401(k): $1.2M
• Lisa's 403(b) (county teacher): $600K
• Joint brokerage account: $800K
• David's inherited brokerage (from his mother in 2019, kept separate): $800K

Under MD Family Law §8-203, the marital estate is $4.2M ($1.6M home + $1.2M 401(k) + $600K 403(b) + $800K joint brokerage). David's $800K inherited brokerage is excluded as separate property under §8-201(e)(3) — kept in his sole name, never commingled.

Step 1: Equitable distribution under §8-203

Given the 22-year marriage, comparable career trajectories, and roughly equal non-monetary contributions (Lisa was the primary parent for 15 years; David earned more in salary terms), a Maryland court would likely apply close to a 50/50 split. The settlement structure:

• Marital home sold; proceeds split 50/50 = $800K each
• QDRO splits David's 401(k): $600K to Lisa = total Lisa retirement = $1.2M
• Joint brokerage split 50/50 = $400K each
• Total to each spouse from marital estate: $2.1M
• David retains his $800K inherited brokerage = David ends at $2.9M, Lisa at $2.1M

Step 2: Federal §1014 step-up and §1041 transfer analysis

Under IRC §1041, the transfer of the home, 401(k) (via QDRO), and brokerage assets between Lisa and David is non-taxable. Lisa receives David's basis in the assets (carryover basis under §1041(b)(2)). When she eventually sells the brokerage assets, she will owe LTCG on the gain measured from David's original basis, not the divorce-date FMV.

Step 3: Post-decree MD estate tax exposure

At $2.1M (Lisa) and $2.9M (David) at age 58, both are well under the $5M MD exemption. But assume modest 5% annual real growth on their non-401(k) assets for 22 years (to age 80):

• Lisa's $2.1M grows to approximately $6.1M
• David's $2.9M grows to approximately $8.4M

By age 80, both have crossed the $5M MD estate threshold. Lisa's MD estate tax bill (16% on $1.1M above exemption) would be approximately $176,000. David's would be approximately $544,000. Without planning, MD takes nearly $720K of combined assets that would have stayed in the family if either had moved to Florida or Texas in retirement.

Step 4: The MD inheritance tax overlay

If Lisa leaves her estate to her two children, no MD inheritance tax applies — both are lineal descendants exempt under §7-203. If David remarries and his second wife inherits his $800K separate brokerage, that transfer is also exempt (spouse). But if David's estate plan leaves $500K to his nephew (his late sister's son), the 10% MD inheritance tax under §7-204 applies — a $50,000 tax bill that doesn't exist for an estate of similar size in Virginia or Florida.

The strategic levers for a Maryland divorce at $1M+

• Preserve separate-property tracing for inherited assets. Under §8-201(e)(3), inheritances stay separate ONLY if not commingled. During the marriage, if either spouse received an inheritance, the receiving spouse should maintain it in a sole-titled account and document the chain of title. In divorce, hiring a forensic accountant to trace separate funds through 15+ years of statements often costs $5K-$15K but can protect six-figure separate-property claims.
• Negotiate property allocation considering long-term estate tax exposure. If one spouse is more likely to remain in Maryland and the other is likely to retire to a no-estate-tax state (Florida, Texas, Virginia, Tennessee), allocate appreciating assets to the spouse moving out of MD. This minimizes future MD estate tax exposure.
• Update the estate plan within 90 days of the decree. Maryland's automatic revocation of bequests to former spouses under MD Estates and Trusts §4-105 applies to wills, but NOT necessarily to revocable trusts, beneficiary designations, or transfer-on-death registrations. The 90-day post-decree checklist is essential here.
• Consider an irrevocable trust funded with 2026 federal exemption. The federal estate tax exemption is $13.99M per person in 2026. For couples whose combined estate exceeds $5M-$10M, using the federal exemption to fund an irrevocable trust BEFORE remarriage or before significant appreciation can shift assets out of the MD estate tax base.
• Coordinate alimony and estate planning timing. Maryland alimony under §11-106 is set on broad discretion. For high-asset divorces, structuring property division to minimize future alimony obligations (rather than relying on indefinite alimony) often preserves more of the marital estate from future MD estate tax exposure on either party.

The Montgomery County and Baltimore court system specifics

Maryland family law is administered at the Circuit Court level, with the divorce decree entered by a Circuit Court judge. Montgomery County (where Bethesda and Rockville are located) and Baltimore County have specialized family law dockets that can move complex high-asset divorces through faster than rural counties. Both jurisdictions also have well-established forensic accountant and CDFA networks experienced with the §8-203 + §7-309 + §7-204 interaction.

Maryland does NOT have a no-fault waiting period as long as some states. Under §7-103, a one-year separation is generally required for a no-fault divorce. Mutual consent divorces under §7-103(b) (no minor children, written agreement on property and alimony) can be granted without the one-year wait. For high-asset divorces with children, the one-year separation typically applies — but the divorce can be filed and litigated during that period; the decree is simply not entered until the one-year mark.

Key takeaways

• Maryland is the only US state with both an estate tax ($5M exemption, Tax-Gen §7-309) and an inheritance tax (10% on collateral heirs, Tax-Gen §7-204). Both must be planned around in a high-asset MD divorce.
• MD Family Law §8-203 governs equitable distribution — not 50/50 by default, but heavily influenced by the 11 statutory factors. Long marriages typically produce close-to-equal splits.
• Inherited property is excluded from marital property under §8-201(e)(3), but commingling destroys this protection. Tracing matters in MD high-asset divorces.
• The $5M MD estate exemption is not portable between spouses. Both parties must plan independently post-decree.
• The 10% MD inheritance tax on collateral heirs makes post-decree beneficiary updates a tax-driven exercise, not just a paperwork update.
• Maryland alimony under §11-106 follows broad-discretion principles. Federal TCJA treatment applies to all post-12/31/2018 decrees.
• For $5M+ combined estates, consider using the federal $13.99M exemption to fund an irrevocable trust during or shortly after divorce to shift assets out of the MD estate tax base.