Covington occupational-license-fee filer and Kentucky–Ohio payroll-withholding specialist for small employers crossing the Ohio River. Reciprocity collapses the state-tax arbitrage; the local fee matrix is the surviving moat.

On the demand side, Kenton runs 3,248 establishments and 64,839 employees per County Business Patterns 2024. The 10-to-99-employee band is the buying band. Typical profiles place 15 to 25 percent of establishments in that band, which implies roughly 500 to 800 Kenton small employers in scope. The Cincinnati-Ohio-Indiana-Kentucky MSA is the 10th-largest in the United States at about 2.27 million people. The Brent Spence Bridge on I-71/I-75, the John A. Roebling Suspension Bridge, the Clay Wade Bailey Bridge, and the Licking River bridges into Newport carry the daily commuter exchange. The cross-river commuter share of Kenton's labor force is structurally large.

The supply side runs through referral channels. Northern Kentucky community banks — Heritage Bank (Northern Kentucky-headquartered with deep Covington, Fort Mitchell, and Edgewood SBA lending), Stock Yards Bank & Trust, Republic Bank, Central Bank, and Fifth Third — each route every SBA closing through a payroll-tax-compliance attestation, which makes their small-business loan officers a working referral channel. The Northern Kentucky Chamber and the Covington Business Council host lunch-and-learns on payroll compliance. Gusto and ADP Run handle multi-state withholding payment but generally do not file Covington occupational-license-fee returns. Local payroll bookkeepers refer the city-fee filing work out.

The credentialing stack is one of two options. Either a single principal holds both the Kentucky CPA license (Kentucky State Board of Accountancy) and the Ohio CPA license (Accountancy Board of Ohio), or an EA (IRS-credentialed federal-tax practitioner under Circular 230) partners with a CPA holding dual state-board admission. EA-only is sufficient for the federal slice but cannot represent before either state revenue department on attest matters.

On the operational side, Covington occupational-license-fee filing runs on a quarterly Form OL-3 plus annual reconciliation. The fee is 2.5 percent on wages earned inside Covington — place-of-performance based, not residency-based. Kenton County's roughly 0.7097 percent applies to Kenton-county place-of-performance wages not already inside an incorporated city's fee. Cincinnati's 1.8 percent earnings tax runs through Form W-1 quarterly plus Form W-3 annual. Under KRS 141.070, a Kentucky-resident commuter to an Ohio employer files a Kentucky return showing the Ohio wages. The Ohio employer should withhold Kentucky tax via Form IT-4NR. Where the employer mistakenly withholds Ohio tax, the Kentucky resident files Ohio IT-1040 nonresident with a reciprocity claim. ADP, Gusto, Paychex, or QuickBooks Payroll API or CSV ingest discipline matters — manual swivel-chair won't scale past about 30 clients per principal. Errors-and-omissions insurance at a $1 million minimum runs $2,000 to $5,000 a year for a solo practitioner.

Out-of-state CPA firms — RSM, Plante Moran, BDO — have Northern Kentucky offices and could roll payroll-tax-compliance into existing audit clients. The hedge is that these firms target $5 million-plus revenue clients, well above the 10-to-100-employee band. Gusto already supports multi-state withholding for Kentucky-Ohio reciprocity, but the city-fee filings at Covington and roughly 25 Northern Kentucky municipalities remain manual for nearly every national payroll provider as of 2026. The moat is the city-fee layer, not the state layer. Future Kentucky state rate cuts could simplify the state portion, but the local fee matrix is independent of the state rate. Ohio's perennial push toward Regional Income Tax Agency (RITA) consolidation is a real threat — Cincinnati's RITA participation is the variable to watch. If Kentucky-Ohio reciprocity itself were ever repealed, it would expand matrix complexity, not collapse it. The operator's value would rise.

Revenue model. Recurring monthly retainer per small-employer client: $300-$1,200/month depending on FTE count and matrix complexity. Median ~$600/month for a 25-FTE Covington-PoP employer with cross-river commuters. Extra-fee for state-fee filings: $150-$400 per quarterly filing per jurisdiction; $300-$600 annual reconciliation per jurisdiction. A cross-river client with Covington + Kenton + Cincinnati + KY + OH filings generates ~$1,000-$2,500/quarter beyond the retainer. One-time setup / cleanup engagements: $2,000-$8,000 per new client.

Steady-state P&L for a 75-client solo principal (illustrative; verify against peer benchmarks). Recurring revenue: 75 × $600 × 12 = $540,000. Per-filing extras (4 quarters × about $1,500 average × 75 clients × about 30 percent with the full matrix) = about $135,000. Setup and cleanup (10 new clients per year × $4,000) = $40,000. Gross revenue is about $715,000. Admin staff (one FTE at $55,000 plus benefits) is about $70,000. Software, tax research, E&O, and portal fees are about $25,000. Office, utilities, and miscellaneous are about $15,000. Operating expenses total about $110,000. Owner seller's discretionary earnings come to about $600,000. That figure assumes the founder takes no W-2 salary and software and staff stay lean. Realistic owner take-home after a reasonable compensation split runs $300,000 to $450,000.

Two-principal 150-client expansion roughly doubles the line — gross revenue ~$1.3-1.5M, owner SDE per principal ~$400-$500K after additional overhead. The owner-take-home math is materially stronger than the typical succession-CPA target because the per-filing extras compound on top of a recurring retainer base.

Capital stack: $25,000 to $75,000 total. Software stack covers payroll-API connectors at about $200 to $500 a month, a tax-research subscription such as CCH IntelliConnect or Thomson Checkpoint at $3,000 to $8,000 a year, and e-filing infrastructure for Kentucky and Ohio state, Cincinnati, and the roughly 25 Northern Kentucky cities (mostly free portals plus paid reconciliation tools). E&O insurance runs $2,000 to $5,000 a year. Office is home office or shared Northern Kentucky co-working — OneNKY Center is one option. Bootstrap-financeable; SBA 7(a) is overkill at this capital tier.

• City of Covington Finance Department

  Primary fee-filing surface — 2.5% occupational-license fee

  Institution

  City Manager Sharmili Reddy is the named principal at 638 Madison Avenue. Quarterly Form OL-3 plus annual reconciliation. The fee is 2.5 percent on wages earned within Covington — place-of-performance based.
• Kenton County Fiscal Court Finance Officer

  County government — roughly 0.7097% county fee

  Institution

  Applies to Kenton-county place-of-performance wages not already inside an incorporated city's fee.
• City of Cincinnati Division of Income Tax

  Ohio-side municipal-tax surface — 1.8% earnings tax

  Out-of-county

  Form W-1 quarterly plus Form W-3 annual. Cincinnati is one of Ohio's largest municipalities and historically retains independent administration. Full Regional Income Tax Agency consolidation has been proposed and not enacted multiple times.
• Kentucky State Board of Accountancy and Ohio Accountancy Board

  Dual-state CPA credentialing

  Out-of-county

  Kentucky CPA at cpa.ky.gov; Ohio CPA at acc.ohio.gov.
• IRS Enrolled Agent roster

  Federal-tax practitioner under Circular 230

  Out-of-county

  EA covers federal practice across all states but cannot represent before state revenue departments on attest matters.
• Heritage Bank

  Northern Kentucky-headquartered community bank — primary referral channel

  Institution

  Deep Covington, Fort Mitchell, and Edgewood SBA lending. Every SBA closing now requires payroll-tax-compliance attestation, which makes the loan officers a working referral channel.
• Stock Yards Bank & Trust, Republic Bank, Central Bank, and Fifth Third

  Community and regional banks with Northern Kentucky presence

  Institution

  Each carries a small-business book with cross-river clients in scope.
• Northern Kentucky Chamber, Covington Business Council, and OneNKY Center

  Chamber and business-council referral channels

  Institution

  Chamber lunch-and-learns on payroll compliance are a documented intake channel. OneNKY Center opened September 2025 and houses the Northern Kentucky Chamber, Thomas More External Affairs, the NKY Bar Association, and LifeSciKY.
• ADP, Gusto, Paychex, and QuickBooks Payroll

  National payroll providers

  Out-of-county

  These handle multi-state withholding payment but generally do not file Covington occupational-license-fee returns or the roughly 25 Northern Kentucky municipal fee returns. The moat sits on the city-fee layer.
• RSM, Plante Moran, and BDO

  National CPA firms with Northern Kentucky offices

  Out-of-county

  These firms target $5 million-plus revenue clients, well above the 10-to-100-employee band this candidate serves.
• Kentucky Society of CPAs, Ohio Society of CPAs, and the NATP Northern Kentucky chapter

  Professional associations

  Out-of-county

  Continuing-education tracks for Kentucky and Ohio dual-state credentialing.

The acquisition lane in this candidate is build-it for the founder owner-operator scope. The realistic Kenton-resident dual-state CPA / EA practice with documented Covington occ-license + KY-OH payroll-withholding-matrix specialty book and founder-era ownership is small but real — verification pulls KY State Board of Accountancy + Ohio Accountancy Board dual-license rosters + IRS EA roster at irs.gov enrolled-agent search.

The highest-yield path is direct entry as a credentialed founder LLC anchored on the LOCAL fee matrix specialty. Reader stands up the credentialing stack (single-principal dual KY+OH CPA OR EA + CPA-partner with dual state-board admission); registers ADP / Gusto / Paychex / QuickBooks Payroll API or CSV ingest infrastructure; binds E&O $1M minimum + tax-research subscription; builds the 50-150 small-employer client portfolio at $300-$1,200/month recurring through chamber + community-bank + payroll-bookkeeper referral channels. The acquisition variant — buy a Kenton-resident dual-state CPA / EA practice with founder-era ownership and documented payroll-tax-compliance specialty book — is structurally rare given the credentialing barrier; the candidate is more naturally a build-it founder lane.

Cert and onboarding scope. KY+OH dual-state CPA dual-licensure is 6-12 months from a clean start (CPA exam pass + reciprocal-state licensure application). EA is faster federal-recognized substitute (12-week test prep + IRS exam + ongoing CE). E&O insurance binding is 1-2 weeks for clean credit. ADP / Gusto API connector setup is 1-4 weeks. Software stack + tax-research subscription procurement is 2-4 weeks. The integrated stack plus a $25K-$75K bootstrap cushion is the realistic 6-12 month buildout.

• — How the IRS Covington wind-down affects occupational-license-fee receipts and whether the 2.5 percent rate stays stable. A call to Covington City Manager Sharmili Reddy and the Finance Director answers this.
• — The Kenton County Fiscal Court Finance Officer's identity, the exact county fee rate, and how the county fee overlaps with the 16-plus city fees.
• — The exact rates and filing portals for each Northern Kentucky city — Erlanger, Edgewood, Independence, Fort Mitchell, Fort Wright, Elsmere, Park Hills, Crestview Hills, Lakeside Park, Crescent Springs, Villa Hills, Bromley, Ludlow, Taylor Mill, Ryland Heights, Fairview, Kenton Vale, Florence in Boone, and Newport, Bellevue, and Dayton in Campbell.
• — The exact Cincinnati form numbers and Cincinnati's current Regional Income Tax Agency participation status.
• — The current Form IT-4NR (Ohio nonresident statement of residency) text and any recent updates from Kentucky and Ohio revenue.
• — SBA 7(a) volume and small-business book size at Heritage Bank, Stock Yards, Republic, Central, and Fifth Third in Northern Kentucky.
• — Current Northern Kentucky Chamber and Covington Business Council leadership and member counts.
• — Whether Gusto, ADP, or Paychex have built any Covington-fee filing capability since this candidate was scoped.
• — Whether Ohio is advancing municipal earnings-tax simplification this legislative session, and where Kentucky HB 8 future rate cuts land.

Tonight, this week, this month — in that order. Each step produces a yes/no or a number, not a deeper understanding.