Tax planning for S-corporation owners
A guide for CPA and EA firms: what a tax plan is, how to scope and price the engagement, what the deliverable holds, and how the handoff with a financial advisor works.
A tax plan is a written recommendation for what a client should do before the year closes and before the next one starts. For an S-corporation owner it usually covers salary, distributions, retirement contributions, reimbursements, estimated payments and state tax.
A return looks back at a year that is over. A plan looks forward, so each recommendation should show the figure it rests on, where that figure came from and the assumptions behind it.
How firms scope and price it
Planning is its own engagement, separate from the return. The engagement letter names the deliverable, the client duties, what is out of scope and who signs off. A questionnaire collects the facts before anyone writes a recommendation.
Fees hold up best when they start from the deliverable and the review time behind it rather than from hours alone. Fixed, tiered and value-based models all show up in practice.
Tax planning engagement letter: what to include
Scope, deliverable, client duties, fee basis, exclusions and who signs off, with a copy-ready template.
Tax planning questionnaire for S-corp owners
The questions to ask before any recommendation, grouped by the memo section each one feeds.
How to price tax planning services
Fixed, tiered and value-based fees set from the deliverable and the review time behind it.
What the deliverable holds
The usual deliverable is a memo or report the owner can read in one sitting: the baseline, the scenarios the firm considered, the recommendation, the assumptions behind it and the source for each figure.
For an S-corporation owner the salary line comes first, because the retirement ceiling, the payroll cost and the split between salary and distributions all depend on it.
S-corp tax planning: what the owner memo should cover
Salary, distributions, retirement, accountable plan, estimates and state, section by section.
What a tax planning report should contain
Baseline, scenarios, recommendation, assumptions, a source manifest and the sign-off.
S-corp year-end tax planning checklist
A dated fourth-quarter checklist: salary true-up, payroll, retirement, basis and estimates.
Proactive tax planning: how firms deliver it year-round
A four-touchpoint calendar, one memo per client, and the hours it takes.
The strategies a plan weighs
Most S-corporation plans come back to the same few decisions: whether the entity should elect S status at all, how much retirement contribution the salary supports, and how the owner gets reimbursed for business costs paid personally.
S-corp election: writing the entity selection memo
The memo a firm writes before Form 2553, with a break-even on salary, payroll cost and state tax.
Solo 401(k), SEP and defined benefit plans for S-corp owners
Why W-2 salary sets the contribution ceiling, and how the three plan types compare.
Accountable plan for S-corp owners: rules and records
The three requirements, the timing safe harbor and a record checklist for owner reimbursements.
The advisor handoff
Many owners also work with a financial advisor. The advisor often spots the planning question first, and the firm signs the tax conclusion. A clean handoff says who sends what, by when, and who signs.
The advisor-to-CPA tax planning handoff
What the advisor sends, what the firm returns, and a shared calendar for the year.
How financial advisors read a tax return
Which pages and schedules to open, the S-corp signals to flag, and a handoff checklist.
Tax planning software for financial advisors
Return intake, planning connectors, output and pricing models, compared.
Choosing planning software
Planning tools differ in how they take in a return, what they produce and how they charge. Weigh them against the deliverable the firm already writes and the systems it already runs.
Tax planning software for CPAs: how to evaluate it
Six criteria for comparing planning tools, with dated vendor notes.
Tax planning software integrations: what connects to what
How planning tools connect to tax prep, practice management, storage and Zapier.
Holistiplan vs Instead vs TaxPlanIQ: who each one fits
Published pricing side by side, and the kind of firm each tool suits.
General information for tax professionals. Not tax advice.
Most S-corp plans start with the salary number
Get started with a Reasonable Compensation Study for the owner's salary.