S-corp election worth it? (break-even calculator)

Every Twitter thread telling you to elect S-corp "to save on taxes" skips the two conditions that matter: you need enough profit, and you have to run actual payroll. Below a clear income line, the election costs you money instead of saving it.

Here's the break-even math.

What an S-corp election actually does

You start as a sole prop or single-member LLC. You file Form 2553 with the IRS and elect S-corp tax treatment. Now:

• You're an employee of your own corporation.
• You pay yourself a W-2 salary ("reasonable compensation"). FICA applies (15.3%, half from you, half from the corp, same total).
• Profits above your salary flow through as distributions. No SE tax on distributions.

That's the whole point. The salary portion still pays full FICA. The distribution portion saves the 15.3%.

The break-even calculation

Compare two paths at the same gross profit:

Sole prop:
  Net SE profit               = $100,000
  SE tax (15.3% × 92.35%)     = $14,130
  Half-deduction Schedule 1   = $7,065
  Net SE tax after deduction  = $14,130 (paid in full; deduction reduces income tax, not SE tax)

S-corp at $60K reasonable salary:
  W-2 salary                  = $60,000
  FICA (employer + employee)   = $9,180   ← total FICA on $60K
  Distribution                = $40,000   ← no SE tax / FICA
  S-corp filing fee (Form 1120-S)
  Payroll service              ≈ $500–$1,200/yr
  Total payroll burden        ≈ $9,180 + $1,200 = $10,380
  Saving vs sole prop         = $14,130 − $10,380 = $3,750

At $100K of profit and a $60K salary, the S-corp saves ~$3,750/yr before considering the cost of a CPA to do the 1120-S return (typically $800–$1,500).

After CPA fees: ~$2,500–$3,000/yr saved. Worth it.

At $50K of profit: the salary needs to absorb most of the income, and the savings collapse. Not worth it.

At $200K of profit: salary maybe $100K, distribution $100K, savings on the distribution at 15.3% = $15,300. Net of payroll + CPA = ~$13,000–$14,000/yr saved. Big win.

The break-even threshold

The widely-cited rule of thumb is $60K–$80K of consistent net profit. Below that, the friction (payroll, separate return, accounting complexity) eats the savings.

Refinements:

• Higher break-even if you're in a state with high franchise / minimum LLC fees (CA: $800/yr minimum franchise tax for S-corps + LLCs)
• Lower break-even if you'd outsource bookkeeping anyway: the marginal cost is just the 1120-S
• Skip entirely if income is volatile: switching back from S-corp is annoying, and if you might have a $30K year next year, the election becomes a tax burden, not a benefit

What "reasonable compensation" means

The IRS requires S-corp owner-employees to take "reasonable" salary before distributions. Underpay yourself and the IRS can re-characterize your distributions as wages: back FICA, plus interest, plus penalty.

Factors the IRS considers:

• What you'd pay an outsider to do your job
• Comparable salaries in your geography
• Time spent on the business
• Skill level and responsibility

The 60% rule (60% of net profit as salary, 40% as distribution) is a heuristic, not a regulation. The Tax Court has accepted lower salaries when supported by a market-based analysis.

For more, see reasonable comp for S-corp owners.

What it costs to operate

Total annual operating cost: usually $1,500–$3,500. Subtract this from your projected SE-tax savings to find your real break-even.

What you give up

• Simplicity. Sole-prop accounting is one Schedule C. S-corp is a separate 1120-S, a K-1, and personal payroll. The mental overhead is real.
• QBI deduction quirks. The 20% §199A deduction applies to both, but the salary portion of S-corp income is not QBI-eligible. At very high incomes this can claw back some of the SE-tax savings.
• Solo 401(k) simplicity. Possible with both, but the math differs. As a sole prop you contribute as both employer and employee from one income figure. As an S-corp, employee contribution comes from W-2 salary; employer contribution is up to 25% of W-2 salary. If your salary is set low, your retirement contribution capacity drops.
• Health insurance complexity. S-corp shareholders >2% must include health insurance premiums in W-2 wages and then deduct them on Schedule 1, a pass-through that's easy to mess up.

When NOT to elect

• Profit consistently below $60K
• Profit highly variable year to year
• Heavy employer 401(k) contributions you want maximized
• You're outside the U.S. for tax-residence reasons (S-corp shareholders must be U.S. citizens or residents)
• You don't want to run payroll

How ExpenseGhost helps

The break-even math above needs one input you probably don't have handy: your real net profit, current as of today. ExpenseGhost tracks it from your bank transactions and keeps a running SE-tax estimate next to it, so when you sit down to decide on the election, the numbers are already there. See the tax dashboard.

FAQ

When can I elect S-corp status?

By March 15 to be effective for the current tax year. After March 15, the election is effective for next year, though you can request late-election relief under Rev. Proc. 2013-30 if you have reasonable cause.

Can I revoke the S-corp election?

Yes, but you generally can't re-elect for 5 years. Don't elect on a whim.

Do I need a separate bank account?

Yes, and not just for S-corp. Even sole props benefit from one. See Plaid for sole props: business vs personal split.

What about state taxes?

Most states recognize S-corp status, but a few (California, Tennessee) impose franchise / excise tax on S-corps that erodes the savings. Check your state.

Can I be an S-corp and a sole prop simultaneously?

Yes: different lines of business, different tax treatment. The S-corp's losses don't offset Schedule C income at the entity level, but they do flow to the same 1040.

ExpenseGhost provides tax estimates and tax-ready exports. We are not a tax preparer and do not file returns. Estimates are informational — verify every number with a licensed tax professional before filing.