Business Owner: Are Roth conversions worth doing this year and how do I decide how much to convert?

“I’m a Germantown service business owner. My income swings year to year: should I convert some pre‑tax retirement money to Roth this year, and how much can I convert?” It's important because your business structure (S corporation, partnership, or Schedule C), the Maryland pass‑through entity (PTE) tax election, and your year‑end moves (among other things) can change your marginal tax rate and that drives whether a Roth conversion is smart for your business tax plan.

High‑level steps to decide

1) Project your taxable income first

• Build a simple year‑end projection for your business taxable income, considering entity type:

  • S corporation: reasonable W‑2 salary plus pass‑through profit on your K‑1.

  • Partnership/LLC taxed as partnership: K‑1 pass‑through items.

  • Schedule C: net profit after expenses.

• Layer in Maryland specifics:

  • Consider Maryland’s PTE tax election for S corporations and partnerships, which can shift state income tax to the entity level and reduce federal taxable income—this may expand or shrink your “bracket headroom.”

  • Remember Maryland state and county income taxes apply to owners; different county rates affect your combined marginal rate in Montgomery County.

• In addition to your business taxable income, you need to project your individual income. It is recommended that you work with a tax accountant who can assist with putting everything together properly.

2) Find your “bracket headroom” for a targeted top rate

• Identify your expected tax bracket

• Pick the top bracket you’re comfortable filling this year

• Estimate taxable income before any Roth conversion.

  • Headroom = top of your target bracket minus your projected taxable income.

  • That headroom is a starting point for “how much to convert.” Converting more than that usually pushes income into a higher bracket and can raise your total lifetime taxes.

  • Important interaction: the 20% qualified business income (QBI) deduction for pass‑through businesses can move with your taxable income. A Roth conversion (ordinary income) can change how much of the QBI deduction you get, depending on your situation. In some cases it helps; in others it hurts.

3) Coordinate business levers before you convert

• S corporation salary: timing year‑end payroll to satisfy “reasonable compensation” while not overshooting income goals can change bracket room.

• Expense timing and depreciation: Section 179/bonus decisions and the timing of major purchases affect business profit and bracket space.

• Retirement plan contributions: employer contributions to a Solo 401(k) or SEP are business deductions that reduce profit—sometimes you create room with a deduction, then fill it with a Roth conversion. This is a coordinated plan, not a guess.

• Maryland PTE tax election: electing PTE can reduce federal taxable income at the entity level while satisfying Maryland individual tax—this can create additional headroom for a conversion in the same year.

• Cash flow and estimates: conversions increase current‑year federal and Maryland tax. Adjust your quarterly estimates to avoid penalties. Aventa Tax provides business tax services in Montgomery County Maryland that include estimate planning tied to conversions.

4) When a Roth conversion may not be worth it this year

• You’re already in a high‑income year due to a big contract, sale, or bonus depreciation add‑back.

• A conversion would erode your QBI deduction or push you into a meaningfully higher Maryland county rate.

• You expect substantially lower business income next year (a better opportunity to convert at a lower combined rate).

Bottom line

• Roth conversions can be worth doing in a year when your business income is lower and you have bracket headroom. However, you need to factor other income (outside the business) too. You should also consult with your investment advisor.

• Decide “how much” by first projecting business profit (and other income), Maryland impacts (including PTE), and QBI, then filling only the amount that keeps you inside your target bracket.

• If your situation involves S corporation wages, multiple K‑1s, or you’re near QBI limits, it’s time to call a professional.

How Aventa Tax helps local owners decide

Our team of qualified tax professionals helps Maryland business owners model tax projections and work with your investment advisor to identify whether a Roth conversion makes sense or not.

If you’re in Germantown, Rockville, Bethesda, Silver Spring, or anywhere nearby and want clear guidance on Roth conversions as part of your business plan, Aventa Tax can help. For business tax services in Montgomery County Maryland from call 301-235-2724 or learn more about our retirement tax planning services. We’ll model your options and handle your Maryland tax preparation so you can minimize lifetime taxes with confidence.

Disclaimer: This information is for educational purposes only. Please consult a tax professional for specific advice on your situation. Aventa Tax does not provide investment advice.