Why this matters to trucking businesses

Family-run carriers and owner-operators often hold substantial assets—tractors, trailers, terminals, shop equipment and real estate—inside closely held businesses. While the federal estate tax exemption increased to $15 million per person for 2026, Maryland still imposes its own estate tax with a lower exemption, meaning some estates for trucking entrepreneurs could owe Maryland tax even when no federal estate tax is due. Understanding the payment clock and available relief can prevent forced equipment sales or cash crunches that disrupt operations.

Key Maryland due dates and how to pay

Maryland estate tax is due on or before the due date of the Maryland estate tax return. The return itself is due nine months after the decedent’s date of death. Importantly, an extension to file does not extend the time to pay. Payments can be remitted with the Maryland estate tax remittance form (MET-3, attached to Form MET‑1) or sent with a letter that includes the decedent’s name, Social Security number, date of death, and the county of probate. Mail payments to the Comptroller of Maryland, Revenue Administration Division, Estate Tax Unit, P.O. Box 828, Annapolis, MD 21404‑0828.

When cash is tight: Maryland’s alternative payment schedule

If an estate can’t pay in full by the due date, Maryland allows a written request for an alternative schedule. The Comptroller may approve either a short deferral (generally up to one year, with the possibility of reapplying annually) or an installment plan. Applications should include the filed return (or a reasonable estimate if filing under an extension), a proposed schedule, an itemized inventory and valuation of estate assets, sources of estate income, and—for estates dominated by real property—evidence that the property is actively marketed if sale proceeds will fund the tax. Estates filing federally should also disclose the status of any IRS estate tax and whether a federal alternative payment was allowed. Approval typically includes consent to the filing of a state tax lien against the estate’s property.

Federal relief for closely held trucking companies (IRC 6166)

Many carriers qualify as closely held businesses. If the decedent’s interest in a closely held business exceeds 35% of the adjusted gross estate, the executor may elect under IRC §6166 to pay the federal estate tax in installments over as many as 10 years, with interest-only payments for the first four years and the first principal installment due on the fifth anniversary of the return’s due date. The election must be made on a timely filed Form 706 (or by timely amendment within six months of the non‑extended due date). Be aware: significant sales or distributions from the business can terminate the election and accelerate the remaining federal tax.

Practical steps for owner-operators and fleet managers

Start the clock early: the nine‑month Maryland deadline arrives fast. Put an executor or personal representative in charge of gathering records, valuing assets, and coordinating advisors.
Map your exposure: federal estate tax may be avoided in 2026 given the higher exemption, but Maryland’s $5 million exemption still applies. Model both regimes to determine whether the estate owes state tax only.
Line up liquidity: identify life insurance, cash reserves, or credit facilities so equipment doesn’t need to be liquidated at a discount to meet state tax.
Consider elections: if the business stake is large, explore a federal §6166 installment election; if Maryland tax is still due and full payment isn’t feasible, prepare a detailed alternative payment request for the Comptroller.
Document, document, document: itemize rolling stock, titles, permits, receivables, and real estate. If real property makes up most of the estate, keep evidence of active marketing or other funding sources to support a Maryland installment or deferral request.
Avoid premature distributions: Maryland expects certification that no distributions will be made before taxes are paid; violating this can jeopardize relief.

Bottom line

For trucking families, Maryland’s estate tax can still bite even as the federal bar rises in 2026. Mark the nine‑month payment deadline, prepare for cash needs, and use state and federal tools wisely: §6166 at the federal level for closely held businesses, and Maryland’s alternative payment schedule when immediate full payment isn’t realistic. A proactive plan with your estate attorney and CPA can keep trucks on the road and ownership in the family.

Sources Consulted: Comptroller of Maryland; Internal Revenue Service (IRM, Estate Tax 6166 guidance); University of Maryland Extension; Kiplinger.

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This article was prepared exclusively for truckstopinsider.com. For professional tax advice, consult a qualified professional.