Tax Planning Services: What a Tax Strategist Does Month by Month
If you earn $300,000 or more — or your business is finally profitable — you have heard you need "tax planning," and you are not sure what that actually buys you. Here is the plain answer: a tax planning service works out, before you owe anything, what your tax bill would be under every legal option available to you, then restructures your entity, compensation, retirement, and assets so you owe the smallest amount. It is not your CPA running the numbers in December. That is tax preparation, and it is the part most accountants stop at.
Tax planning is not tax preparation
Tax preparation reports what you already owe. Tax planning decides what you will owe — and then changes it. A preparer takes completed events (W-2s, 1099s, closing statements) and reports them on the right forms. A planner looks forward: entity choice, compensation structure, retirement contributions, asset purchases, investment timing — all before the deadline makes them locked in.
Most national firms list generic "tax planning services" like "maximize deductions" and "minimize liability." That tells you nothing concrete. A real tax planning engagement is a year-round calendar of specific, coordinated actions — and the difference between filing and planning is often five figures a year.
What a tax planning service actually does, month by month
Real tax planning runs on a calendar, not a deadline. Here is what a tax strategist actually does across the year, quarter by quarter.
January–February: Baseline. Reconcile the prior year, run the first multi-year projection, confirm tax basis in your entity and investments, and review bookkeeping quality. This is where the planner learns your full picture — not just the numbers on last year's return.
March–April: Entity and retirement. Before the filing deadline, review entity structure (S-corp vs. LLC vs. C-corp), set or adjust reasonable salary, and fund retirement accounts. Many business owners leave $20,000+ on the table here because their CPA never asked about a solo 401(k) or a cash balance plan.
May–September: Estimates, equity, and assets. Right-size quarterly estimated payments to avoid underpayment penalties. Plan equity compensation moves — RSU vesting elections, ISO exercise timing, 83(b) elections on founder shares. Start cost segregation studies on any new real estate purchases or construction projects.
October–December: Year-end moves. Time Roth conversions, confirm QBI deduction eligibility, accelerate charitable donations through a donor-advised fund, make Section 179 equipment purchases, harvest losses, and run the final multi-year projection for the coming year.
The five levers a tax strategist pulls (with dollars)
Every planning engagement revolves around the same five levers. Here is what each one moves and the kind of numbers at stake (all figures are illustrative, not a guarantee).
1. Entity structure. A sole proprietor pays 15.3% self-employment tax on every dollar of profit. An S-corporation election lets you pay yourself a "reasonable salary" and take the rest as distributions free of self-employment tax. On $300,000 of profit with a $150,000 salary, that saves roughly $23,000 a year — before any other planning.
2. Retirement vehicles. A solo 401(k) or cash balance plan lets a business owner defer far more than a standard IRA. The 2025 total contribution limit for a solo 401(k) can reach roughly $70,000 (employee salary deferral plus employer profit share). At a 37% federal marginal rate, maxing that contribution defers about $26,000 in federal income tax — plus state — every year the plan is in place.
3. Cost segregation. When you buy or build commercial real estate, a cost segregation study reclassifies 20–35% of the building's basis from 39-year property into 5-, 7-, and 15-year classes. On a $2 million building, that can move $500,000 into faster depreciation. First-year depreciation on that reclassified amount runs roughly $100,000 versus $12,000 under straight-line — a swing of about $33,000–$37,000 in year one at the top bracket.
4. Equity compensation. RSUs, ISOs, and NQSOs each have a different tax treatment, and the timing of an exercise or a vesting election can change your tax bill by five figures in a single year. An 83(b) election on early-stage stock locks in a low strike-price gain; an ISO exercise before the AMT threshold is planned can trigger a surprise tax bill. A tax strategist maps these decisions against your projected income, not last year's.
5. Multi-year projections. This is the lever that coordinates everything else. You cannot time a Roth conversion, a capital gain, a QBI deduction, and a charitable contribution in the same year without knowing what the next three years look like. And with the Tax Cuts and Jobs Act provisions — including the 20% QBI deduction and lower brackets — set to sunset after 2025, the decision to convert in 2025 or 2026 is a five-figure call that only a forward-looking projection can answer.
| Lever | What the planner moves | Illustrative annual impact |
|---|---|---|
| Entity structure | S-corp vs. LLC; salary vs. distributions | ~$23,000 less self-employment tax |
| Retirement vehicles | Solo 401(k), cash balance, profit share | ~$26,000 deferred at 37% on a maxed plan |
| Cost segregation | Building basis into 5/7/15-year classes | ~$35,000 first-year swing on a $2M property |
| Equity compensation | RSU/ISO exercise timing, 83(b), AMT | Five figures on a single well-timed exercise |
| Multi-year projections | Roth conversions, gain timing, QBI | Often the largest — and least visible — line item |
The dollar difference between filing and planning
Take two business owners, each earning $400,000 from a profitable company. Owner A files: sole proprietorship, no retirement plan beyond a personal IRA, buys a $2 million building with straight-line depreciation, converts nothing. Owner B plans: S-corp with reasonable salary, maxes a solo 401(k), runs a cost segregation study, times a Roth conversion in a lower-income year.
Owner B's tax bill is lower by a five-figure margin every year, not because of exotic shelters, but because of boring, legal, well-timed mechanics that Owner A's filing-only CPA never mentioned. The planning does not eliminate taxes — it removes avoidable ones. And some years, the best plan is simply paying, knowing that a cost voluntarily paid is still better than a penalty or an audit from an aggressive position.
How to tell a tax planner from a tax preparer
Many accountants advertise "tax planning" and mean a year-end checklist. Here is how to tell the difference — and what to ask before you engage someone.
Questions to ask:
- "Do you run a multi-year projection, or only this year's return?"
- "Who handles entity structure — election changes, reasonable salary, S-corp vs. LLC?"
- "Do you coordinate cost segregation and equity compensation, or refer those out?"
- "How often do we meet — quarterly or just once a year?"
Objections answered. "I already pay a CPA." Filing and planning are different services. Many CPAs will run a projection for an hourly fee or a flat planning retainer — the question is whether they offer it at all. "Won't planning trigger an audit?" Conservative, documented positions reduce risk. The worst audit risk usually comes from sloppy bookkeeping, not from proactive planning.
Before your next filing deadline — not after it — ask your accountant one question: "Can you show me a three-year projection and a cost-segregation review?" If the answer is anything but yes, find a tax strategist who plans year-round, and interview them with the questions above.
FAQ
What does a tax planning service actually do?
A tax planning service analyzes your income, entity structure, retirement accounts, and investments before tax deadlines and recommends legal moves to reduce your total tax bill. It is a forward-looking process, not a review of what already happened.
What is the difference between tax preparation and tax planning?
Tax preparation reports what you already owe based on completed transactions. Tax planning looks ahead at your options and changes your financial structure before the deadline so you owe less. Planning is proactive; preparation is reactive.
How much do tax planning services cost?
Most tax planners bill by the hour or as a flat annual retainer. A full year-round engagement typically costs more than a simple return but far less than the taxes it saves, making it a high-return investment for high-income earners and business owners.
Can tax planning help me if I am an employee with equity compensation?
Yes. RSU vesting elections, ISO exercise timing, 83(b) elections, and AMT planning all have significant tax consequences. A tax strategist maps these decisions against your projected income to avoid surprise tax bills and optimize your long-term tax position.
Do I still need a tax planner if I already have a CPA?
It depends on whether your CPA provides planning or just preparation. Many CPAs focus on compliance and do not offer multi-year projections, entity structure reviews, or cost segregation. If your accountant only sees you at filing time, you are likely missing opportunities.
Is December too late to start tax planning?
Some moves — like funding certain retirement accounts, making estimated payments, or completing a cost segregation study — can still be made in December. Others, like entity changes or Roth conversions, are time-sensitive. Earlier is always better, but a year-end review is still valuable.
