CPA TCP common mistakes
CPA TCP · Understand the traps and how to avoid them.
Treating the TCP as a harder version of REG and spending most study time re-drilling individual and entity basis rules, without ever practicing multi-year planning scenarios where the taxpayer's facts change (sale of a business, retirement, a move to a new state).
REG rewards memorizing rules and computing a single correct number; TCP is a discipline-level exam that tests whether you can select and sequence planning moves across periods and fact patterns. Candidates carry over REG study habits and feel productive while covering material they already know.
What to do instead
Rebuild the study plan around the TCP blueprint domains and weight practice toward planning tasks: compare alternative structures, project two-to-three-year outcomes, and write out the recommendation. For each rule you review, force yourself to state one planning use and one fact that would reverse the answer.
Answering an entity-choice or compensation question by computing the tax at only one level (for example, comparing corporate tax to individual tax on a distribution) and ignoring the second layer, the qualified business income deduction, or the payroll tax cost.
Candidates default to the single-entity computation they practiced most, and the exam deliberately builds answer choices that match the incomplete calculation. Time pressure pushes them to the first plausible number.
What to do instead
Before computing, write the full chain of tax events for each option: entity-level income, deductions, distributions, shareholder or partner-level income, QBI treatment, and employment taxes. Compare after-tax cash to the owner in each scenario, not just the tax at one level.
Applying the current-year individual rules as if they were permanent, or ignoring the interaction between the standard deduction, itemized deductions, above-the-line adjustments, and phaseouts when recommending a planning strategy.
The individual provisions change frequently through legislation, and candidates memorize a number from an older study cycle or from a prior tax year. Phaseouts are easy to overlook because they only bite at higher income levels.
What to do instead
For every individual planning question, build a short bracket-and-phaseout map: gross income, adjustments, the greater of standard or itemized, then each credit and phaseout threshold that applies. Verify the year-specific figures against the authoritative source rather than memory, and note them in a one-page reference you rebuild each study cycle.
Recommending a property transaction structure (installment sale, like-kind exchange, charitable gift, or sale to a related party) without checking the holding period, the character of the gain, depreciation recapture, and the net investment income tax and state consequences.
The headline benefit of the strategy is memorable, while the conditions and the recapture and surtax layers are detail-heavy. Candidates stop analyzing once they recognize the technique.
What to do instead
For each property planning technique, keep a checklist of four gates: eligibility and holding period, character and recapture, deferral or exclusion mechanics and their limits, and the surtax and state overlay. Run every fact pattern through all four before selecting an answer.
Missing the crossover between the entity and the owner on distributions: treating a distribution as tax-free whenever it is labeled a return of capital, or ignoring the accumulated earnings and profits that make a distribution a dividend.
Distribution ordering rules (earnings and profits, then basis, then gain) are mechanical and are often learned as a single sentence. Candidates skip the earnings and profits computation because it feels like a bookkeeping exercise rather than a planning issue.
What to do instead
Practice the distribution ordering rules with small numerical examples that include current and accumulated earnings and profits, stock basis, and a distribution that exceeds both. Then attach the planning consequence: which ordering produces dividend income, which produces capital gain, and how the choice of entity changes it.
Ignoring state and local tax and multi-state apportionment when the planning question involves a resident moving, a business expanding, or income sourced in more than one jurisdiction.
Candidates study federal rules almost exclusively and treat state tax as out of scope. The exam expects the planner to flag residency, sourcing, and nexus issues even when the federal answer is straightforward.
What to do instead
Add a short state-tax module to your plan covering residency and domicile, sourcing of wages and business income, apportionment basics, and nexus triggers. On any fact pattern with a move or multi-state operations, write one sentence on the state consequence before choosing an answer.
Treating a specialized planning area (retirement plan selection, stock compensation, gift and estate transfer, or trust taxation) as a memorization topic, then failing questions that require comparing two vehicles for a specific client goal.
These areas have dense rules and the candidate tries to hold them all in memory. The exam instead asks for a recommendation, which requires weighing contribution limits, deduction timing, distribution rules, and beneficiary effects together.
What to do instead
For each specialized area, build a comparison table of the two or three main vehicles with rows for contribution and deduction, taxation of growth, distribution and penalty rules, creditor and estate treatment, and the client profile each suits. Practice writing a two-sentence recommendation that names the tradeoff.
Skipping the threshold and phaseout arithmetic on credits and deductions, then selecting the answer that applies the full benefit to a taxpayer whose income exceeds the limit.
The phaseout formulas are tedious and the candidate recognizes the credit name and moves on. Distractor answers are built precisely from the full-benefit computation.
What to do instead
Whenever a credit or deduction with an income limit appears, compute modified adjusted gross income first, then the phaseout amount, then the allowed benefit. Make a habit of writing the threshold and the phaseout rate next to the item before doing any other math.
Reading the fact pattern once and answering from the first recognized keyword, without identifying the client's actual objective, time horizon, and constraints stated in the prompt.
The exam items are long and the candidate is behind on time, so they pattern-match on a familiar phrase. TCP items often embed a constraint (liquidity need, charitable intent, desire to keep control) that eliminates the technically lowest-tax answer.
What to do instead
Adopt a fixed reading routine: restate the objective and constraints in one line, list the two or three candidate strategies, then eliminate by constraint before computing tax. Practice on timed sets so the routine becomes automatic under pressure.
Leaving computational gaps in the areas that feed every planning decision, such as basis tracking through gifts, inherited property, and entity formations, and then reasoning qualitatively about a question that requires a number.
Candidates assume planning questions are conceptual and under-practice the arithmetic. Basis errors then propagate into gain, deduction, and distribution answers, and the candidate cannot tell which step went wrong.
What to do instead
Drill basis mechanics separately until they are automatic: carryover basis for gifts, stepped-up basis for inherited property, formation and contribution basis, and adjustments for distributions and losses. Then re-solve the planning questions with the numbers written out so each step is auditable.