Boston, MA · S-Corp Accountants & CPAs
Find an S-Corp CPA in Boston, MA
CPAs who specialize in S-corporations — from the initial Form 2553 election through annual 1120-S filings, reasonable compensation analysis, and shareholder basis tracking. Serving Boston, MA and the surrounding region — Boston-area accountants serve life sciences, higher education, financial services, and innovation-economy startups.
Why Boston clients hire s-corp
Local context for s-corp accountants & cpas in Boston, MA
Dominant local industries
- Life sciences & biotech
- Higher education & nonprofits
- Asset management & hedge funds
- Tech & robotics startups
- Healthcare & medical groups
Massachusetts tax climate
Massachusetts has a 5% flat personal income tax plus a 4% surtax on income above $1M (the 'Millionaires Tax'), and an 8% corporate excise tax. The state offers a pass-through entity excise (PTE) election to mitigate federal SALT caps. Sales tax is 6.25% with no local add-on.
Key local deadline
Mar 15
Massachusetts partnership and S-corp returns; PTE election made on the return.
When to hire
- You're considering electing S-corp status (Form 2553)
- Your single-member LLC profits exceed $60K–$80K
- You need help setting reasonable owner compensation
- You have multiple shareholders or are issuing stock
- You're behind on 1120-S filings or 1099 requirements
What they do
- Run S-election analysis: tax savings vs. added compliance
- File Form 2553 (S-election) and any late-election relief requests
- Prepare annual Form 1120-S and Schedule K-1s for shareholders
- Document reasonable compensation with industry benchmarks
- Track shareholder basis and AAA (accumulated adjustments account)
Typical fees
What it costs
Low end
$1,200
per year
High end
$5,000
per year
Notes
1120-S preparation: $1,200–$2,500. Add bookkeeping + payroll oversight: $500–$1,500/mo. Reasonable comp study: $500–$1,500 one-time.
Compare
S-Corp vs Single-Member LLC (Disregarded)
| Factor | S-Corp | Single-Member LLC (Disregarded) |
|---|---|---|
| Self-employment tax | Only on W-2 wages, not distributions | On all net profit (15.3%) |
| Filing | Form 1120-S + K-1s annually | Schedule C on personal return |
| Payroll required | Yes — owner must take reasonable W-2 | No |
| Compliance cost | $1,200–$3,000/yr extra | Minimal |
| Break-even on tax savings | Usually $60K–$80K in profit | — |
Questions to ask
- How many S-corp returns do you file each year?
- Do you document reasonable comp with a defensible study?
- How do you track my shareholder basis annually?
- Will you handle late S-election relief if I missed the deadline?
- What's your process for K-1 delivery — and by when?
- Do you coordinate with my payroll provider for owner W-2?
Red flags
- Doesn't ask about reasonable comp at all
- Doesn't track shareholder basis
- Files 1120-S late without explanation (penalty is $245/month per shareholder)
- Can't explain the difference between distributions and W-2 wages
- Tells you to take 100% distributions and skip payroll
Documents to prepare
- Articles of incorporation or LLC formation documents
- EIN letter and any S-election confirmation (CP261)
- Prior-year 1120-S and K-1s
- YTD payroll reports for all owners
- Shareholder basis schedule, if you have one
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FAQ
S-Corp Accountants & CPAs in Boston — common questions
How much does s-corp accountants & cpas cost in Boston?+
Boston s-corp accountants & cpas typically charge $1,200–$5,000 per year. 1120-S preparation: $1,200–$2,500. Add bookkeeping + payroll oversight: $500–$1,500/mo. Reasonable comp study: $500–$1,500 one-time.
Do I need a Massachusetts-licensed CPA to work with a s-corp accountants & cpas in Boston?+
For Massachusetts state filings, your preparer should hold a CPA license from the Massachusetts Board of Accountancy or be an Enrolled Agent. Out-of-state pros can prepare your federal return but should not sign as a CPA on Massachusetts returns. Massachusetts has a 5% flat personal income tax plus a 4% surtax on income above $1M (the 'Millionaires Tax'), and an 8% corporate excise tax.
When does an S-corp election save money?+
Generally once net profit consistently exceeds $60K–$80K. Below that, the added cost of payroll, 1120-S preparation, and compliance often exceeds the self-employment tax savings.
What is reasonable compensation for an S-corp owner?+
The IRS requires you to pay yourself a salary 'reasonable' for the work performed before taking distributions. Defensible studies use industry, geography, and role data — typically 30–60% of profit for owner-operators.
What's the deadline for an S-election?+
Form 2553 is due by March 15 of the year the election takes effect, or within 75 days of formation. Late-election relief is available under Rev. Proc. 2013-30 in many cases.
Can I undo an S-election?+
Yes, but with a 5-year waiting period before re-electing. Most reversals are triggered by adding ineligible shareholders or moving toward an IPO.
What if I missed filing 1120-S?+
Penalty is $245 per shareholder per month, up to 12 months. File late as soon as possible and request first-time abatement if you qualify.