Methodology
How the planning estimates are built
A plain-English look at the math, the inputs, and the limits behind every number you see in S-Corp Pay Planner — so you always know what the tool can and can't tell you.
A planning and organization tool. Not payroll, bookkeeping, tax filing, or legal advice.
What the calculator uses
The core formulas, in plain English
Every number on the results panel comes from one of these five lines.
Owner pay
Target W-2 salary + planned annual distributions
The total cash the owner plans to take out of the business in a year.
Reserve
Selected reserve % × reserve base (total owner pay)
A planning cushion you set aside for federal tax obligations across the year.
Employer payroll tax estimate
6.2% × salary (up to wage base) + 1.45% × salary
A simplified planning estimate for the employer side of Social Security and Medicare.
Remaining in business
Annual profit − owner pay − employer payroll tax − reserve
What's left inside the business after the plan above is funded.
Monthly / quarterly view
Annual figures ÷ 12 or ÷ 4
A timing view only. It does not change any tax calculation — it just splits totals into periods.
Inputs and outputs
What goes in, what comes out
Inputs you provide
Annual business profit
Estimated yearly profit before owner pay.
Current W-2 salary
What the owner is paying themselves today, if anything.
Target W-2 salary
The salary level being considered for planning.
Planned annual distributions
Cash the owner plans to take as distributions over the year.
Estimated tax reserve %
The share of owner pay set aside as a federal tax cushion.
Monthly / quarterly view
Timing view used to split annual totals into periods.
Outputs you see
Salary vs distributions split
How the planned owner cash is divided between W-2 and distributions.
Reserve recommendation
The annual reserve target based on the chosen %.
Monthly or quarterly reserve target
The same reserve, broken into period chunks for planning.
Employer payroll tax estimate
A simplified planning estimate of employer-side payroll tax on the salary.
Remaining after owner pay
Profit left in the business after salary, distributions, and payroll tax.
Remaining after reserve
Profit left after the reserve is also funded.
Plan status and warnings
Plain-English flags when the plan looks tight, over budget, or unusual.
Assumptions & limitations
Where this tool's math stops
Being upfront about limits is part of being trustworthy.
Estimates are simplified
The tool uses rounded planning math designed to be quick to understand, not to match a CPA's full calculation.
Rounded planning math
Numbers are rounded to whole dollars and percentages are kept simple so plans stay easy to compare.
No state-by-state tax modeling
Only a simplified federal-style payroll estimate is used. State income tax, local tax, and unemployment tax rules are not modeled.
Does not determine reasonable salary
Reasonable salary is a facts-and-circumstances determination. This tool helps you plan and document a number — it does not declare one as legally compliant.
Not payroll or filing software
It does not run payroll, file forms, generate W-2s, or submit tax payments. Use payroll and filing tools for those steps.
Confirm with a qualified professional
Final tax, legal, and compliance decisions should always be confirmed with a licensed CPA or qualified tax advisor.
Why this is still useful
Simplified math, real planning value
Compare different pay structures
See how shifting salary vs distributions changes your plan, side-by-side, without rebuilding a spreadsheet.
Pressure-test scenarios
Try a leaner profit year, a bigger distribution, or a higher reserve — see immediately whether the plan still fits.
Plan reserves
Translate a target reserve % into a clear monthly or quarterly amount you can actually set aside.
Prepare better CPA conversations
Walk into review meetings with an organized planning summary instead of a blank page and rough notes.
Stay organized year-round
Keep your planning numbers in one place so the next decision doesn't start from scratch.
Trust
What you can count on from this tool
Transparent assumptions
Every formula is documented on this page — no hidden math.
Visible logic
The result panel shows how each output was derived from your inputs.
Plain-English explanations
Warnings and status notes are written in everyday language, not jargon.
Honest limitations
We say clearly what the tool does not model and where a CPA is needed.
No false compliance guarantees
We never claim the tool produces legally compliant or audit-proof numbers.
Methodology FAQ
Common questions about the math
The reserve is your selected reserve % multiplied by the reserve base (total owner pay). It's a planning cushion, not a tax bill — it helps you set aside cash across the year so federal tax obligations don't surprise you.
Ready to put the methodology to work?
Try the calculator with your own numbers — every formula on this page is right there in the result panel.
A planning tool. Not payroll, bookkeeping, tax filing, or legal advice.