Marketing agencies in Illinois are valued at 2x to 5x SDE or 0.5x to 1x annual revenue depending on retainer mix, client concentration, and whether services are generalist or specialized. Digital-first agencies with recurring monthly retainer revenue command the higher end of the range.
Retainer vs. Project Revenue
Recurring retainer revenue is the gold standard for marketing agency buyers. A $1.5M agency where 70% of revenue comes from ongoing monthly retainers is worth materially more than one where 80% is project-based. Project revenue is unpredictable, relationship-dependent, and difficult to underwrite for financing purposes.
Client Concentration Risk
If your top client represents more than 25% of agency revenue, buyers will price in significant concentration risk. Losing that one client post-acquisition could fundamentally change the economics of the business. Diversified client rosters — 20+ clients with no single client above 15–20% — command the best multiples.
Niche digital agencies (healthcare marketing, B2B SaaS, home services) often command premiums over generalist shops because their expertise is harder to replicate and the client relationships are more technical and sticky.
Recast Seller’s Discretionary Earnings, then apply a planning multiple for this Illinois business. Replacement labor is subtracted. This is a planning tool, not an appraisal.
Before debt, working-capital peg, holdback, and tax. Educational only.
How Illinois buyers put a number on how to value a marketing agency or ad agency
This page is the valuation guide. It is not the sale-process playbook. Seller’s discretionary earnings (SDE) is the cash a full-time working owner can take after you normalize the books. Start with the tax return. Add owner pay and one-time costs. Subtract the wage you must pay to replace the owner.
Agency recasts on retainer MRR after a market-rate account lead, not a single campaign year. Add back owner-rainmaker compensation, then pull pass-through media and any contractor farm that is really 1099 friends. Client concentration above ~25 percent is a haircut, not a logo slide. A 3x–6x SDE band is for contracted retainers that survive the founder leaving lunch.
Planning band on this vertical: 3x–6x SDE. That is a range, not a quote. BizBuySell’s Q2 2026 Insight Report showed a 2.7× cash-flow multiple across all reported closed deals. Do not use that marketplace average as this shop’s appraisal.
A worked planning example (illustration)
Illustration only — not a quote for any Illinois shop. A marketing agencie whose tax return shows $211,000 of net profit is not worth $211,000 × a rumor multiple.
Add back the owner’s $104,000 W-2 and payroll tax, $12,500 of discretionary benefits, $8,000 of accepted one-time cost, and $12,500 of personal expenses that a buyer will not run. Then subtract $8,000 of replacement labor if the owner still diagnoses, sells, or closes the books.
Adjusted SDE in this illustration is $340,000. At 4.50x, enterprise value is $1,530,000 before debt, working capital, holdback, and tax.
SDE line items buyers actually use
- Reported net profit (tax return, not the marketing P&L)
- + Interest expense
- + Income taxes (not payroll, sales, or property tax)
- + Depreciation and amortization
- + Owner W-2, bonuses, and payroll taxes on the owner
- + Discretionary owner benefits that a buyer will not keep (auto, personal travel, family on payroll with no role)
- + Accepted one-time or non-recurring expenses
- − Market-rate replacement labor for owner work that will not transfer
- = Seller’s Discretionary Earnings (SDE)
What moves the multiple up or down
- Written retainers with assignment paths
- Account leads who stay and already own the weekly
- Low client concentration
- Revenue that is fees, not pass-through media
- IP and ad-account control the buyer can keep Monday
What does not transfer with the price
No statewide marketing license. If they place insurance, mortgage, or healthcare advertising, those verticals add their own claim rules. Illinois does not transfer client contracts by logo change — assignment clauses and personal guarantees sit in the MSAs. The “book” is the contracts and the team, not the Instagram.
Diligence that changes the number
- Retainer versus project mix and remaining MSA term
- Client concentration and who holds the relationship
- W-2 team versus 1099 farm and utilization
- Pass-through media as a share of revenue
- IP ownership of creative, pixels, and ad accounts
- Non-solicits that Illinois will actually enforce
Documents to gather this week
- Three years of signed business tax returns and matching P&Ls
- Year-to-date P&L, balance sheet, and three months of bank statements
- Current lease, amendments, and a plain-English remaining term
- License and permit list, including who holds each card
- Top-customer concentration (names redacted until an NDA)
A simple Illinois close calendar
Plan six to twelve months from cleanup to close on a prepared Main Street deal. Start CBS-1 and any Chicago or Cook notices at letter-of-intent, not the week of funding. Landlord consent often takes longer than the lender.
Related pages on this site
Educational only — not legal, tax, or a formal appraisal. Confirm bulk-sale notices, licenses, and tax allocation with counsel and a CPA.
Questions
No. This is education and planning math. A professional opinion of value is a confidential conversation. We work on a success fee if you engage a sale process. There is no file-upload portal.
Start with the 3x–6x band on this vertical, after you adjust seller’s discretionary earnings. Marketplace-wide 2.7× cash flow from BizBuySell Q2 2026 is not your quote.
No statewide marketing license.
Most prepared Main Street sales take about six to twelve months from cleanup to close. License transfers, landlord consent, and SBA underwriting add weeks.
CBS-1 is the Illinois bulk-sale notice. File it at least ten business days before an asset transfer that meets the statute. Late filing can put Illinois tax risk on the buyer.