Free Tax Tool

Business Entity Tax Calculator

Seven questions, then a side-by-side federal tax comparison of sole prop / LLC, S-Corp, and C-Corp for your numbers — QBI, payroll tax, and C-Corp double taxation included. You can edit every assumption on the results screen. Want the full reasoning? Read our guide to how your business should be taxed.

Step 1 of 7

What's your estimated annual share of net business profit before your owner salary?

Enter only your share of the business profit, not the company's total profit. If there are multiple owners, use the portion allocable to you. This should still be before paying your own W-2 salary.

$
$0$250k$500k$1M+
This definition matters. If you enter profit after your salary is already deducted, the S-Corp comparison will understate how much salary reduces K-1 income.

What's the minimum reasonable salary you could pay yourself?

In an S-Corp you must pay yourself a W-2 salary for services you perform. The IRS requires it to be “reasonable” – what you'd pay a third party to do your role. Enter the lowest defensible number based on your industry, role, and time commitment. This is the most important variable in the S-Corp calculation.

$
$0

What's your filing status?

This affects your tax brackets, standard deduction, and the QBI phaseout thresholds.

SingleFiling as an individual taxpayer
Married filing jointlyFiling with a spouse on a joint return

How much total other taxable income do you expect this year, including wages from other jobs?

Include everything else that affects your taxable income and bracket context – such as W-2 wages, spouse wages, investment income, rental income, and other business income.

$
This is your broader income picture for QBI and bracket purposes.

Of that amount, how much is earned income already subject to payroll tax, such as W-2 wages?

This is a subset of the prior question, not an additional amount. Use it for wages or other earned income that already uses part of the Social Security wage base.

$
Example: if Step 4 is $300,000 of total other taxable income and $180,000 of that is W-2 wages, enter $180,000 here.

Who owns the business?

Ownership structure determines which entity types are available to you.

Just me – I'm the sole ownerNo co-owners, partners, or outside equity
I have business partners or co-ownersTwo or more people own equity in the business

Are you planning to raise outside investment capital?

Institutional investors typically require a specific entity structure.

No – self-fundedBootstrapped or personal capital, no plans to raise equity rounds
Maybe somedayNot currently raising, but open to it down the road
Yes – actively seeking investorsPlanning VC, angel, or institutional rounds in the near term

Want a CPA to put this to work?

Tell us a bit about your situation and a Fraim CPA will review it with you. No obligation.

We'll follow up within one business day.

Thanks! A Fraim CPA will reach out.

We have your details and your entity scenario.