Sole proprietorship vs C corp in Rhode Island: which costs less (2026)

At $100,000 profit in Rhode Island, a sole proprietorship costs $25,233 a year in tax and fees and a C corporation costs $30,652. On these figures a C corporation does not cost less at any profit up to $500,000.

+$5,419 a year

more for a C corporation than a sole proprietorship in Rhode Island, at these numbers.

With these settings the switch does not pay at any profit from $10,000 to $500,000. Setting up costs $230 once in state filing fees.

Rhode Island, 2026: $100,000 profit, single filer

Item	Sole prop	C corp	Change
Self-employment taxirs.gov, 2026 rates	$14,130	$0	−$14,130
Federal income taxirs.gov, 2026 rates	$8,235	$4,791	−$3,444
State income taxtax.ri.gov, checked Oct 23, 2026	$2,868	$2,384	−$484
Annual Report (Form 630)docs.sos.ri.gov, checked Oct 23, 2026	$0	$50	+$50
Payroll tax on your salaryirs.gov, 2026 rates	$0	$6,535	+$6,535
State disability and paid leavedlt.ri.gov, checked Oct 23, 2026	$0	$440	+$440
Payroll service and tax return (estimate)	$0	$2,000	+$2,000
State corporate income taxtax.ri.gov, checked Oct 23, 2026	$0	$3,813	+$3,813
Federal corporate income tax (21%)irs.gov, 2026 rates	$0	$10,639	+$10,639
Yearly cost	$25,233	$30,652	+$5,419

What these figures count

State income tax, and state taxes on the business itself: franchise, LLC, S corp, gross receipts and excise taxes.
Social Security and Medicare on both sides of an owner salary, federal unemployment tax and the state's new-employer rate.
The 20% qualified business income deduction with its income limits and the professional-service rule.
Yearly report fees, and a cost you can change for payroll and the business tax return.

Many S corp calculators leave out state taxes and the QBI deduction, which can make the election look better than it is.

Yearly cost at each profit level

Profit	Sole prop	C corp	Difference
$30,000	$5,610	$8,122	+$2,512
$50,000	$10,858	$13,769	+$2,911
$75,000	$17,492	$21,091	+$3,599
$100,000	$25,233	$30,652	+$5,419
$150,000	$42,627	$51,781	+$9,154
$200,000	$60,658	$72,278	+$11,620
$300,000	$105,051	$114,853	+$9,802

Federal and Rhode Island tax and fees, single filer, revenue 1.5 times profit, default salary for S and C corps. "Difference" is C corporation minus Sole proprietorship.

What the switch takes in Rhode Island

File the Articles of Incorporation with the state: $230 (fee).
Get an EIN from the IRS (free, online) and open a business bank account in the new name.
Incorporate with the state, then issue shares to yourself.
Register with Rhode Island as an employer and run payroll for your own salary: federal Forms 941 each quarter, Form 940 and a W-2 each year. New employers pay Rhode Island unemployment tax at 1% on the first $30,800 of wages. dlt.ri.gov See what payroll costs.
Federal return each year: Form 1120, due April 15 for a calendar year.
State upkeep each year: Annual Report (Form 630), $50 a year, due Between February 1 and May 1.

What changes between the two

A C corporation pays 21% federal tax and Rhode Island corporate tax on its profit, and the owner pays tax again on dividends (the double tax). A sole proprietorship pays no federal income tax itself: profit lands on the owner's return, where the 20% qualified business income deduction can apply.

The figures assume all C corp profit after tax is paid out as dividends. Profit kept in the company to grow it is taxed only at the corporate rate until it is paid out, which is where a C corp can come out ahead.

Questions

How much does it save at $100,000 in Rhode Island?

Nothing. C corporation costs $5,419 a year more ($30,652 against $25,233).

When does a C corp make sense in Rhode Island?

Mostly when profit stays in the company, when outside investors need one, or for the qualified small business stock exclusion. For an owner who takes the profit out, the second tax on dividends usually costs more. On these figures it never costs less up to $500,000.

More for Rhode Island

Common cases in Rhode Island

Other states