How much tax do marketing consultants pay?

You'll owe 15.3% self-employment tax on 92.35% of net profit plus federal income tax at your marginal rate. For most consultants, total federal tax lands around 25–35% of net profit depending on income and deductions.

When does an S-corp make sense for a marketing consultant?

Generally once net profit is reliably above $80,000–$100,000. You pay yourself a reasonable salary (subject to payroll tax) and take the rest as distributions that avoid the 15.3% SE tax. The savings usually outweigh the added payroll and accounting costs at that level.

Can I deduct my own advertising as a marketing consultant?

Yes. Ads you run to promote your consulting practice, plus the tools you test and use for clients, are fully deductible business expenses. Keep records tying the spend to your business.

Do I need to make quarterly estimated tax payments?

If you expect to owe $1,000 or more for the year, yes. Payments are due April 15, June 15, September 15, and January 15. Missing them triggers IRS underpayment penalties even if you pay in full by April.

Self-Employment Tax Calculator for Marketing Consultants (2025)

How much tax does a self-employed marketing consultant pay? A marketing consultant earning $110,000 with about $20,000 in business expenses owes roughly $22,567 in total federal tax for 2025 — a 15.3% self-employment tax plus federal income tax — or about $5,642 per quarter. A common rule of thumb is to set aside 25–30% of net income for taxes. Use the calculator below for your own numbers and state.

Independent marketing consultants are paid on 1099s with no withholding, so you're responsible for both self-employment tax and income tax on your net earnings. This calculator shows what you'll owe and how much to send the IRS each quarter.

Annual gross income (before expenses)

Total business expenses (incl. deductions below)

State

This tool provides estimates for educational purposes only and is not tax advice. Tax rules change; figures are based on 2025 federal rules. Consult a tax professional for your specific situation.

Deductions Marketing Consultants often miss

Solo marketing consultants commonly net $60,000–$150,000, and retainer-heavy strategists can exceed $200,000. High earners should seriously evaluate an S-corp election, which can save thousands in self-employment tax each year.

Advertising & ad spend: Money you spend testing campaigns, running your own lead-gen ads, and on tools like Google Ads or Meta Ads for your practice is fully deductible.
Marketing software stack: HubSpot, Semrush, Ahrefs, Canva Pro, Mailchimp, and analytics subscriptions are deductible ordinary business expenses.
Home office deduction: A dedicated home office lets you deduct a portion of rent, utilities, and internet, or use the simplified $5/sq ft method up to 300 sq ft.
Client meals & travel: Business meals with clients are 50% deductible, and travel to client sites, conferences, and workshops (airfare, lodging, 70¢/mile driving) is deductible.
Subcontractors & freelancers: Payments to designers, copywriters, or VAs you hire to deliver client work are deductible; issue 1099-NECs for anyone you pay $600+.

Common tax mistakes for marketing consultants

Not electing S-corp status despite high, steady profit, and overpaying self-employment tax as a result.
Deducting client entertainment (tickets, golf) which is no longer deductible, instead of the 50% meals rule.
Skipping quarterly estimated payments and facing a large April bill plus underpayment penalties.
Failing to issue 1099-NECs to subcontractors, which can jeopardize those deductions.

How self-employment tax works

As a self-employed marketing consultant, you pay a 15.3% self-employment tax (12.4% Social Security + 2.9% Medicare) on 92.35% of your net profit, plus federal and state income tax. A common rule of thumb is to set aside 25–30% of your net income for taxes.

Quarterly estimated tax deadlines (2025)

If you expect to owe $1,000 or more, the IRS requires quarterly estimated payments. For 2025 income the deadlines are: April 15, 2025; June 16, 2025; September 15, 2025; and January 15, 2026. Missing them can trigger underpayment penalties. The calculator above estimates your quarterly amount.

Frequently asked questions

How much tax do marketing consultants pay?: You'll owe 15.3% self-employment tax on 92.35% of net profit plus federal income tax at your marginal rate. For most consultants, total federal tax lands around 25–35% of net profit depending on income and deductions.
When does an S-corp make sense for a marketing consultant?: Generally once net profit is reliably above $80,000–$100,000. You pay yourself a reasonable salary (subject to payroll tax) and take the rest as distributions that avoid the 15.3% SE tax. The savings usually outweigh the added payroll and accounting costs at that level.
Can I deduct my own advertising as a marketing consultant?: Yes. Ads you run to promote your consulting practice, plus the tools you test and use for clients, are fully deductible business expenses. Keep records tying the spend to your business.
Do I need to make quarterly estimated tax payments?: If you expect to owe $1,000 or more for the year, yes. Payments are due April 15, June 15, September 15, and January 15. Missing them triggers IRS underpayment penalties even if you pay in full by April.