How to Choose an Accountant or Tax Advisor for Your Startup

A venture-backed startup usually needs a bookkeeper for monthly transaction work and a credentialed tax professional (CPA or enrolled agent) for returns, tax planning and IRS matters. Those can be one firm or two, but they are different jobs, and most problems we see come from asking one person to do a job they are not trained or licensed for.

Think of the work in four layers:

• Bookkeeping: categorizing transactions, reconciling bank and card accounts, running payroll journal entries, closing the month.
• Accounting: accrual adjustments, revenue recognition under ASC 606, deferred revenue, stock compensation expense, financial statements a board or investor can rely on.
• Tax compliance: federal Form 1120, state returns, Delaware franchise tax, 1099s, R&D credit forms, information returns for foreign ownership.
• Tax advisory and representation: entity and equity decisions, QSBS planning, responding to IRS notices, audits.

A simple decision rule: if your company is pre-revenue with under a few hundred transactions a month, one startup-focused firm that bundles bookkeeping and tax is usually the cheapest correct answer. Once you have a finance hire, multiple states, or revenue recognition questions, keep bookkeeping close (in-house or a dedicated outsourced team) and make sure the person signing your returns holds a CPA license or enrolled agent status.

The difference that matters most is legal: who may prepare your return, who may sign it, and who may represent you if the IRS writes back. Anyone paid to prepare or help prepare a federal return must hold a Preparer Tax Identification Number (PTIN), which costs $18.75 a year to obtain or renew. A PTIN is a registration, not a credential. Practice before the IRS is governed by Treasury Department Circular 230 (31 CFR Part 10), which grants unlimited representation rights only to CPAs, enrolled agents and attorneys.

CPA versus EA is a real choice, not a ranking. An EA's license is federal and tax-only, so a good EA can be excellent for returns and IRS notices. A CPA is licensed by a state and is the only one of the two who can sign an audit or review report, which matters once investors or lenders ask for audited financial statements. CPA licensure is also changing: in May 2025 the AICPA and NASBA approved a model pathway of a bachelor's degree, two years of experience and the exam (instead of the 150-credit-hour route), and states are adopting it one by one. That does not change what a licensed CPA may do.

To verify a credential, look up CPAs on CPAverify (run by NASBA) or your state board's lookup, and check EAs and AFSP participants in the IRS Directory of Federal Tax Return Preparers. If someone will not give you a full name and license number, stop there.

For a Delaware C corporation, "tax preparation" should mean every federal, state and Delaware filing the company owes for the year, plus the information returns that sit around them. When you compare quotes, compare this list, not the price.

1. Federal Form 1120. Due the 15th day of the 4th month after year end (April 15 for a calendar-year company). Required even with zero revenue and a loss. Corporations with $10 million or more in total assets at year end must also file Schedule M-3.
2. Form 7004 extension, if needed. Gives an automatic six-month extension to file (to October 15 for calendar-year companies). It does not extend time to pay, so any balance is still due April 15.
3. State income or franchise returns. One for each state where the company has nexus: offices, employees, sometimes only sales. A remote team in three states can mean three state returns plus payroll registrations.
4. Delaware franchise tax and annual report. Due March 1 each year, filed online with the Division of Corporations. The annual report fee is $50 for a non-exempt domestic corporation. The tax is $175 minimum under the Authorized Shares Method and $400 minimum under the Assumed Par Value Capital Method, with a $200,000 cap ($250,000 for Large Corporate Filers). Your preparer should run both methods, because the Authorized Shares Method can produce a five-figure bill for a startup with millions of authorized shares.
5. Forms 1099-NEC and 1099-MISC. Due January 31. For payments made after December 31, 2025, the threshold rose from $600 to $2,000 per recipient per year (P.L. 119-21), indexed for inflation starting in 2027. Collecting W-9s during the year is part of the job.
6. Form 6765 (R&D credit) and Form 8974. If the company qualifies, Form 6765 goes with the 1120, and the payroll tax election is then claimed quarterly on Form 8974 attached to Form 941. For tax years beginning after 2025, Section G of Form 6765 (business component detail) is required.
7. Form 5472, if foreign-owned. Covered in the next section.
8. Section 174A treatment. For tax years beginning after December 31, 2024, domestic research and experimental costs can be deducted immediately again; foreign research is still amortized over 15 years. Small businesses may have catch-up elections for 2022 to 2024 costs. Your preparer should tell you, in writing, which method they used and why.

Ask whether the quote also covers estimated tax calculations, responding to IRS and state notices, and the year-end 1099 run. Those are the three items most often excluded and billed hourly.

If a foreign person owns 25% or more of your US corporation, or your company is a single-member LLC owned by a foreign person, your accountant must know Form 5472 cold. The penalty for not filing it, or filing a substantially incomplete one, is $25,000 per form, with another $25,000 for each 30-day period the failure continues more than 90 days after the IRS sends notice.

The mechanics trip up generalists:

• A 25% foreign-owned corporation attaches Form 5472 to its regular Form 1120, one form per related party with reportable transactions.
• A foreign-owned disregarded LLC files a pro forma Form 1120 with only the name, address and a few page-one items completed, writes "Foreign-owned U.S. DE" across the top, and attaches Form 5472.
• That pro forma package cannot be e-filed. It is faxed or mailed to a dedicated IRS address in Ogden, Utah, not the normal Form 1120 address. Extensions for these filers also go to that address.
• Capital contributions, founder loans, and the company paying a founder's personal expenses are all reportable transactions, which is why "we had no activity" is rarely true.

State filings are the other common gap. Delaware incorporation does not exempt you from California, New York or Texas if you have people or sales there. Delaware itself has also decoupled from parts of the 2025 federal law (including 100% bonus depreciation and the retroactive R&E relief), so a Delaware state return is not a copy of the federal one. A good advisor asks where every employee and contractor lives before quoting, and flags foreign qualification when the company starts operating in a new state.

What goes wrong when this is missed: a foreign founder pays a low-cost preparer for a pro forma 1120, the 5472 is left off, and an IRS penalty notice for $25,000 arrives a year later. Penalty relief based on reasonable cause is possible but slow, and you will pay a specialist to request it.

If your startup pays engineers in the US, your accountant should at least screen for the federal R&D credit every year, and many pre-revenue companies can use it against payroll tax. A qualified small business (gross receipts under $5 million for the year and no gross receipts before the five-year period ending with that year) can elect to apply up to $500,000 of credit against payroll taxes. The first $250,000 offsets the employer share of Social Security tax, and the remainder can offset the employer share of Medicare tax.

A worked example, using a hypothetical seed-stage company with no qualified research expenses in the prior three years:

• Qualified research expenses for the year (US engineering wages and qualifying supplies): $600,000.
• Alternative simplified credit for a company with no prior-year QREs: 6% x $600,000 = $36,000.
• The company elects the payroll offset on Form 6765, filed with its Form 1120 (by the extended due date).
• Quarterly US payroll of $250,000 means employer Social Security tax of 6.2% x $250,000 = $15,500 per quarter. The $36,000 credit is used up across the first three quarters after the return is filed ($15,500, $15,500, then $5,000), claimed on Form 8974 with each Form 941.

The election must be made on a timely filed original return, including extensions. Miss it and the credit simply carries forward against income tax you may not owe for years. That is the single most expensive mistake we see generalist preparers make with startups.

Decide who documents the credit. Some tax firms prepare Forms 6765 and 8974 from a study done by a specialist; others do the study themselves. Either is fine. What is not fine is a preparer who claims the credit without contemporaneous documentation of projects, people and time, because that is what an examiner asks for first.

Startup accounting is sold three ways: a fixed monthly fee, a per-return fee, or hourly billing. The numbers below are typical market ranges for US startup-focused firms as of late 2026, based on our read of startup-firm pricing, not on a survey. Your quote will move with transaction volume, number of states, and accrual versus cash books.

• Fixed monthly bookkeeping (cash or modified cash basis), early stage: roughly $300 to $1,000 per month.
• Fixed monthly accrual accounting with revenue recognition and a monthly close package: roughly $1,000 to $3,500 per month.
• Per-return federal Form 1120 plus one state: roughly $1,000 to $4,000, more for multiple states, M-3 filers, or messy books.
• Each additional state return: roughly $250 to $1,000.
• Form 5472 (with pro forma 1120 for an LLC): roughly $300 to $1,500.
• Delaware franchise tax recalculation and annual report filing: roughly $100 to $500.
• R&D credit study: either a flat fee or a percentage of the credit; percentages vary widely.
• Hourly advisory: roughly $150 to $450 per hour for CPAs and EAs, higher for partners at larger firms.

Here is how to compare two quotes. Firm A charges $500 a month for bookkeeping plus $3,000 for the federal and Delaware returns: $500 x 12 + $3,000 = $9,000 a year. Firm B charges $800 a month all-in, including returns and 1099s: $800 x 12 = $9,600 a year. Firm A looks cheaper until you add two state returns at $500 each, a 1099 run at $400, and four hours of notice work at $300: $9,000 + $1,000 + $400 + $1,200 = $11,600. Always convert quotes to an annual total that covers the full filing list in the previous section.

Our view: fixed fees suit most startups because they reward you for asking questions early. Hourly billing makes founders avoid calling, which is how avoidable mistakes happen. Be cautious of anyone pricing a return far below the ranges above for a company with payroll and multiple states; the cheap return usually leaves out a state, the 5472, or the R&D election.

Ask these on the first call. The answers tell you more than any website.

1. Who will sign our return, and what is their CPA license number or EA enrollment number? (Then look it up.)
2. How many Delaware C corporations at our stage (pre-seed, seed, Series A) do you file for each year?
3. Do you calculate Delaware franchise tax under both methods before we pay?
4. Which state returns do you expect us to owe, and how did you decide that?
5. Do you prepare Form 5472 and pro forma 1120 filings, and how do you send them to the IRS? (Correct answer: by fax or mail to the dedicated Ogden address, not e-file.)
6. Do you screen for the R&D credit and the payroll tax election every year, and who documents the study?
7. How do you handle Section 174A for our domestic R&E, and the 2022 to 2024 catch-up options?
8. What exactly is included in the fixed fee, and what is billed hourly? Please list notices, estimates, 1099s and state registrations.
9. Which accounting, payroll and expense platforms do you work in, and will we own the accounting file and logins?
10. What is your calendar for our year: when do you need closed books, when do you file the extension, and when do you file the return?
11. If we get an IRS or state notice, who responds, how fast, and will you represent us under a Form 2848?
12. If we leave, what will you hand over, and how quickly? (Prior returns, workpapers, fixed asset schedules, carryforward schedules.)

Good answers are specific: names, form numbers, dates. Vague answers to questions 1, 5 and 12 are enough reason to keep looking.

The clearest red flag is a preparer who will not sign the return they prepared. Paid preparers are required to sign and include their PTIN; an unsigned return prepared for a fee is what the IRS calls a ghost preparer.

Other warning signs, roughly in order of how much they cost when ignored:

• No verifiable CPA license or EA enrollment, or a refusal to give a license number.
• "You don't need to file because you had no revenue." A C corporation files Form 1120 every year it exists.
• No questions about foreign ownership, where employees live, or your cap table before quoting.
• Paying Delaware franchise tax off the Authorized Shares Method invoice without recalculating.
• Fees based on a percentage of your refund or credit for ordinary return preparation (contingent fees are restricted under Circular 230, with narrow exceptions).
• The firm, not your company, owns the accounting file or the payroll account, or they will not give you admin access.
• Promises of a specific R&D credit amount before seeing payroll and project data.
• No engagement letter, or one that does not list the returns covered.
• Returns delivered without time for you to review them before filing.
• They want to e-file a foreign-owned LLC's pro forma 1120 with Form 5472.

None of these require expertise to check. They require asking and reading the engagement letter before you sign it.

You can switch firms at any point, but the cleanest windows are right after the October 15 extended filing deadline or right after a month-end close, when the books have a clean cutoff. Avoid switching between February and the April 15 return date unless the current firm is clearly failing, because the new firm will have to rebuild workpapers under deadline pressure.

Request these from the outgoing firm, in writing, and give a deadline:

• Admin access (an owner or admin role, not a basic user seat) to the accounting system, payroll provider, expense tool and bill pay, transferred to a company-owned login.
• Copies of all filed federal, state and Delaware returns for at least the last three years, with e-file acceptance confirmations.
• Workpapers and supporting schedules: fixed assets and depreciation, net operating loss and credit carryforwards, Section 174 amortization schedules, R&D credit studies, state apportionment.
• The current year's trial balance, reconciliations through the last closed month, and any open adjusting entries.
• Copies of IRS and state notices received and the responses sent.
• W-9s on file and the year-to-date 1099 vendor list.
• Delaware franchise tax calculation and confirmation of the latest annual report.

Then give the new firm authority with the IRS. Form 8821 lets a named person or firm receive your tax information (including transcripts) but not represent you. Form 2848 is a power of attorney that lets an eligible representative (CPA, EA, attorney) act for you; a newly recorded 2848 generally revokes earlier ones for the same matters unless you check line 6, which is a simple way to cut off the old firm. Business forms are submitted through the IRS "Submit Forms 2848 and 8821 online" tool, which needs a Secure Access account. Once authorized, the new firm should pull account and return transcripts for the last three years to confirm what was filed, what was paid, and whether any penalties are sitting on the account.

Finally, revoke the old firm's access to bank and payroll accounts, and update the company's contact address with the IRS and Delaware registered agent if the old firm was listed.

The right provider changes as the company grows. Use this as a starting point, then adjust for complexity (foreign founders, multiple states, hardware or inventory).

Two stage-specific rules. Once investors require audited financial statements, the auditor must be independent of whoever does your books, so you will usually need two firms. And once you have employees in more than two or three states, ask your tax firm to show their state return process in detail, because multi-state compliance is where startup tax bills grow fastest.

Score each finalist from 0 to 2 on each line below, and do not hire anyone who scores 0 on the first two.

• Credential verified on CPAverify, a state board, or the IRS Directory (0 = not provided, 2 = verified).
• Engagement letter lists every return in the filing list above (0 = vague, 2 = complete).
• Startup experience at your stage and entity type (0 = none, 2 = it is most of their client base).
• Foreign ownership and multi-state competence, if relevant (0 = unsure, 2 = answered questions 4 and 5 correctly).
• R&D credit process (0 = never claims it, 2 = screens every year and explains the payroll election).
• Pricing clarity converted to an annual total (0 = hourly with no estimate, 2 = fixed fee with a written list of exclusions).
• Data ownership and exit terms (0 = firm owns the file, 2 = you own every login and get workpapers on request).

A score of 11 or more out of 14 is a strong hire. Between 8 and 10, ask follow-ups on the weak lines. Below 8, keep looking.

This guide covers how to choose a provider, not tax advice for your specific facts; rules and fees above were checked against IRS and Delaware sources on October 17, 2026, and your advisor should confirm what applies to your company.