Verified CPA contact data
The CPA email list, sorted by firm size before you send.
A list of 142,576 US CPA and accounting firms is useless without a tier filter. We map the full population, then split it the way buyers actually sell: Big 4, regional, mid-market, local.
The shape of the market
The Big 4 are not the market. The local firm is.
are firms with under 20 staff
The vast majority of US accounting firms are local practices, not regional brands. That is where the seat count and the budget actually sits.
are sole practitioners or two-partner shops
A single CPA, sometimes a partner and a bookkeeper. The decision-maker answers the phone, and they pick the software.
have no marketing or BD function
No CMO, no growth lead, no inbound channel for a vendor pitch. You reach them directly or you do not reach them.
Source: Orbital data, 2026 (US CPA and accounting-firm slice).
By firm size
The four tiers, the way the market actually buys.
Selling audit software to a Big 4 partner is a different motion from selling a tax-prep workflow to a two-CPA practice in Toledo. The list ships pre-segmented so a rep is not trying to qualify their way out of the wrong tier.
Tier 1 / Big 4
Deloitte, PwC, EY, KPMG. Multi-thousand-partner firms, enterprise procurement, named-account selling.
Reach: named-account procurement
Tier 2 / Regional & national
RSM, BDO, Grant Thornton, CLA, and the next ninety or so. National footprints, partner committees, RFPs.
Reach: managing partner, IT director
Tier 3 / Mid-market
Five to fifty staff, one or two offices, often a sector specialty. The partner still picks the software.
Reach: managing partner, owner
Tier 4 / Local & sole
One to four-person practices. The long tail, the part enterprise databases barely have. The owner picks, signs, and uses the software.
Reach: sole proprietor, founding partner
Tier counts approximate. The list lets you filter to a single tier or any combination. Orbital data, 2026.
What's inside each record
The partner, the firm, and the tax stack.
A broker stops at a name and an email. We hand you the contact, the role, and the firm itself, then let Orbital's agents enrich each record with the custom signals your team scores on, including the tax software the firm runs.
Contact
- Full name
- Verified email, partner-level and firm-level
- Direct dial and mobile
- LinkedIn profile
Role
- Job title
- Partner, managing partner, CFO, controller, sole proprietor
- Seniority and decision-maker level
- Current-role confirmed
Firm
- Firm name and website
- Firm size tier (Tier 1 to Tier 4)
- Specialization (audit, tax, advisory)
- Address, city, state, ZIP
- Offices in the group
- Years in business
Context
- Tax software in use
- Industry verticals served
- PCAOB-registered (yes / no)
- Languages spoken
Custom agent signals
The part a static CPA list cannot give you.
Tax-software in use, busy-season hiring, audit-versus-tax mix. The signals a CPA practice broadcasts are not the ones a generic list captures. Point Orbital's agents at your ICP and they research each firm for the signals you score on, then attach them to the record. A few that teams ask for:
If you can define the signal, an agent can go find it. That is the difference between a list and a worklist.
What we do not fake: no stale CPA-license rolls, no scraped state-board dumps, no padded counts. If we cannot stand behind a field, it is not in the record.
Coverage
Every specialization, all 50 states.
The list spans the full US population of CPA and accounting firms. The biggest state economies carry the most depth.
By specialization
Leading state economies
Selling vertical tools to other professional services too? See the dentist email list, the med spa email list, or browse the full /data directory. Adjacent to accounting work, the recently incorporated businesses directory is the same data shape.
The difference
Why your CRM only has the top 100 firms.
Most B2B databases are built from a digital footprint. A company page, a careers site, ad spend, a marketing org chart. The Big 4 and the next hundred regional firms have all of that, so enterprise tools render them in full. Below that, the data gets thin in a hurry.
The problem is that the US accounting market is shaped exactly the opposite of how those tools were built. Roughly 137,000 of the 142,576 firms in our pull are one to four-person practices. The decision-maker is the partner whose name is on the door, they almost never staff a marketing team, and the firm itself often has a single-page website that just lists the phone number. Search that universe with ZoomInfo and the long tail comes back as blank rows.
We build this list from the bottom up. We start with the full population, sort it into the four firm-size tiers, and find the partner contact for each firm. Including the ones a LinkedIn-only database never surfaces. We will not quote you a million CPA emails, because the clean, real number is smaller and worth more. Not a spreadsheet that bounces a third of the way down.
How we build it
Mapped, tiered, matched, validated, enriched.
Mapped. We start from the full population of US CPA and accounting firms, the same 142,576 in our 2026 canonical pull, drawn from the 13,549,104-company small-business map. That is the denominator.
Tiered. Every firm is assigned a size tier (Big 4, regional, mid-market, local). The tier filter is the single most useful filter on a CPA list, and most brokers do not have it.
Matched. For each firm we identify partners and decision-makers, with role and seniority, so a rep can tell a managing partner from a staff accountant before they ever pick up the phone.
Validated. Email addresses are validated by our data source before they reach you, and anything that fails validation is dropped rather than counted. We would rather hand you a smaller list that lands than a bigger one that bounces.
Enriched. Then our agents tag the custom signals you score on, including the tax software in use, so the list arrives sorted by fit rather than zip code.
Who uses it
One list, several jobs.
Accounting software
Reach partners choosing tax-prep, audit, or practice-management tools, segmented by firm-size tier.
Payroll & benefits
Sell payroll, HR, and benefits platforms to firms that run their own books and their clients' books.
Banking & lending
SMB banking, lines of credit, and embedded-finance offers aimed at firm owners and their client base.
M&A and recruiting
Source firms for roll-ups and recruit partners and senior staff during the busy-season hiring window.
CE & credentialing
Reach practicing CPAs with continuing-education courses they need to keep their license current.
Insurance & compliance
E&O and cyber insurance, SOC reporting tools, and PCAOB-adjacent services for audit firms.
Questions
Before you ask sales.
Can I get a free sample of the CPA list?
Yes. Tell us the firm-size tier and the states you care about and we send a sample of around 100 records so you can check the data against your own before anything changes hands.
How is the list segmented by firm size?
Four tiers, the way buyers actually sell. Big 4 (Deloitte, PwC, EY, KPMG), the next 20 to 100 regional and national firms, mid-market firms in the 5 to 50 staff range, and the local one to four-person practices that make up the long tail. Pick a tier and the list narrows to the buyer you can actually win.
What fields come with each contact?
Each record carries the contact (verified email, direct dial, LinkedIn), the person's role and seniority such as partner, managing partner, CFO, controller or sole proprietor, and the firm itself: name, website, firm size tier, specialization, location, and years in business. On top of that, Orbital's agents can attach custom signals you define. We do not pad records with stale CPA-license rolls.
Can you tag tax-software signals?
Yes, and it is one of the most common asks. Point our agents at your ICP and they research each firm for which software they run (QuickBooks, Xero, Drake, Lacerte, ProSeries, CCH, UltraTax) and tag the record. Other common signals: busy-season hiring, recently incorporated, audit versus tax versus advisory mix, and PCAOB-registered.
Where does the data come from?
We start from the full population of CPA and accounting firms in the United States, 142,576 of them in our 2026 canonical pull, then attach partner and decision-maker contacts matched from professional profiles, plus firm-level emails sourced directly from the practices. Emails are validated by our data source. The count is a slice of Orbital's 13,549,104-company US small-business map.
Do you cover sole practitioners?
Yes, and it is the part most brokers thin out on. Most US CPA firms are one to four-person practices, and the owner is the decision-maker. We hold them in the same record format as a regional firm, with the partner contact rather than a generic info inbox.
When should I not buy this list?
If you only sell into Big 4 and the next 20 firms, you do not need a list this size. Your TAM is small enough to map by hand and a CRM enrichment tool will do the job. The list is built for teams selling into the long tail of regional, mid-market, and local firms that enterprise databases never had.
How is this different from ZoomInfo or a list broker?
Two reasons. First, enterprise databases thin out fast below the top 100 accounting firms, and a broker list goes stale within a year of being sold. We map the full population of US CPA firms, including the sole practitioners, and keep it current. Second, our agents enrich each record with the custom signals you score on, such as tax software in use or audit-versus-tax mix, so you get a scored account set, not a flat spreadsheet.
Methodology. Counts are drawn from Orbital's 2026 canonical pull of US small businesses (13,549,104 companies, country US, permanently_closed=false), filtered to the CPA and accounting-firm category set and rolled to the company grain (a multi-office firm counts once, not once per location). Firm-size tiers are assigned using staff-count, partner-count, and entity-type signals from the canonical record. Tier counts are rounded to two significant figures because the cutoffs between tiers are partly judgment calls; the underlying record is exact. Email validation is performed by our data source before delivery; records that fail validation are dropped rather than counted.
Scope. United States only. Canadian CAs (Chartered Accountants) and CPAs are not in this slice. If you need cross-border coverage, ask sales and we will scope it as a custom pull.
Vintage. 2026. Refreshed on a rolling schedule.
See the CPA list before you pay for it.
Tell us the firm-size tier and the states you want. We will send a free sample of around 100 verified partner contacts you can check against your own records, no commitment.
Get a free sample