Business Tax Planning That Happens Before the Deadlines, Not After

Strip away the jargon and small business tax planning is mostly four levers, pulled in the right order at the right time: how your profit is taxed (entity structure and the S corp decision), how you pay yourself (salary vs distributions, and what that does to payroll tax and QBI), where pre-tax dollars can still go (retirement plans, stacked deliberately), and how tax gets prepaid (estimates that track reality instead of last year). Everything else (equipment timing, accountable plans, hiring decisions, state elections) hangs off those four.

The calendar is the point. An S corp election, a new retirement plan, a purchase accelerated into December: each is routine when decided in September and impossible when discovered in March. That is why this service runs quarterly, synchronized with the estimated tax due dates, with a heavier year-end planning push in Q4. If you want a starting point for the annual budget the projection gets checked against, our business budget template is free to use.

A sole proprietor or default LLC owner pays self-employment tax of 15.3% on 92.35% of net business earnings (the Social Security portion capping at the $184,500 wage base for 2026). An S corporation owner pays payroll tax only on the W-2 salary the corporation pays them; profit distributed above that salary avoids it. The catch that carries all the weight: the salary must be reasonable compensation for the work actually performed, defensible against your books and your role, not a token number.

Timing is the planning part. For an election effective for the current tax year, Form 2553 is generally due within two months and 15 days of the start of that year (mid-March for calendar-year businesses), with late-election relief available in limited cases. Electing too early is a real cost too: an S corp with thin profits pays for payroll and an extra return while saving little. Run your own numbers first with the S corp savings calculator, then have the model pressure-tested before you file anything.

The qualified business income deduction lets eligible pass-through owners deduct up to 20% of qualified business income, and it is now permanent law. Below taxable income of $201,750 (single) or $403,500 (married filing jointly) for 2026, it applies with few strings. Above those thresholds, phase-in ranges of $75,000 and $150,000 bring in W-2 wage and property tests, and specified service businesses (consultants, advisors, health professionals, and similar) can lose the deduction entirely at the top of the range.

Planning around QBI is mostly about not breaking it while pulling other levers:

• Owner salary interacts with QBI. S corp wages are not QBI, so a higher salary shrinks the deduction's base while saving payroll tax. The right salary optimizes both together, not either alone.
• Taxable income near a threshold is steerable. Retirement contributions and purchase timing can hold taxable income inside the range where the deduction survives, which can make a deductible dollar worth more than a dollar.
• The books feed the computation. QBI is calculated from what your books report, per entity. Sloppy categorization and blurred entity lines flow straight into a mispriced deduction.

The full mechanics, thresholds, and SSTB rules live in our QBI deduction guide; in the planning engagement, QBI is a constraint checked against every other recommendation.

Retirement plans are the rare lever that reduces tax while keeping the money yours. For 2026, a solo 401(k) allows an employee deferral of up to $24,500 plus an employer contribution of up to 25% of compensation, to a combined defined-contribution limit of $72,000. Stacking means choosing and combining plan types deliberately as profit grows:

Two calendar rules make this a planning lever rather than a filing-season one: several plan types must be established before year-end even when funded later, and the right plan depends on a profit projection you can only make from current books. The stack also feeds back into the QBI math above, which is why these levers get modeled together, not in separate conversations.

Pass-through owners prepay tax quarterly: April 15, June 15, September 15, and January 15. The safe harbors are simple: pay in 90% of the current year's tax, or 100% of last year's (110% if prior-year AGI topped $150,000), and no underpayment penalty applies. What planning adds is judgment about which harbor to steer for. In a growth year, the prior-year harbor legally defers tax on the growth until April, cash you can use all year. In a down year, blindly paying last year's numbers overpays by thousands that sit with the IRS until refund season.

In the engagement, each quarterly checkpoint recomputes the projection from actual year-to-date books and resets the next estimate. The estimate stops being a form letter and becomes the quarterly readout of the whole plan: if the S corp salary changed, or a big purchase landed, or Q2 revenue jumped, the estimate already reflects it. Mechanics and safe-harbor details live in the estimated taxes guide.

• Consistent business profit, roughly $75,000 and up. Below that, the honest advice is usually clean books, a solid return, and one entity conversation, not a year-round engagement.
• Pass-through owners: sole proprietors near the S corp line, existing S corps whose salary was set years ago and never revisited, partnerships with owner-comp questions.
• Complexity signals: income that swings quarter to quarter, multiple entities or states, a spouse in the business, equipment-heavy operations, or a planned sale, purchase, or big hire.
• Owners who will implement. A plan that is admired but not executed saves nothing; the engagement includes implementation tracking because that is where plans usually die.

First year in business? The decision set is different (entity, accounting method, first-year elections) and has its own guide: first year in business taxes.

• A baseline review at onboarding: entities, elections, prior returns, payroll, and open compliance items, so recommendations start from your actual position.
• A full-year tax projection, rebuilt each quarter from year-to-date books, with assumptions written down instead of implied.
• Quarterly planning checkpoints timed to the estimate calendar, each ending with updated estimate figures and a short decision list.
• Written recommendations with the math shown: what we recommend, what it is worth under your projection, what it costs, and its deadline.
• Implementation tracking: every accepted recommendation assigned to an owner (you, us, payroll, your attorney) and tracked to done before its deadline.
• A year-end handoff to the return: the decisions, elections, and support documents delivered to business tax preparation, usually the same team one desk over.

The quote moves with:

• Entity count and structure: one S corp is a different engagement than three entities and a holding company.
• Income level and moving parts: more income near more thresholds means more modeling.
• States: multi-state owners add elections and credit coordination.
• Whether bookkeeping and the returns are bundled: bundled engagements price lower per service because the data work is shared.

Planning engagements are annual, billed monthly or quarterly, with pricing that starts in the low four figures per year for a single-entity owner and is always quoted as a fixed fee after the free initial consultation. If we do not see enough on the table to justify the fee, we say so and point you to the smaller service that fits.

Client feedback is public on our Google reviews. Planning also goes deeper by industry, where the levers change shape: