Mark Sullivan CPA

Mark Sullivan CPA

5.0(4 reviews)
Offers online services
Offers online services

About

I have helped thousands over the years with tax and financial planning. Reviews of prior years returns often result in filing amended income tax returns which result in refunds.

I am an analytic sort, and I dig deep to get information that the client may overlook or be aware of the potential deduction.


Highlights

Hired 17 times
1 employee
38 years in business
Serves Sterling , VA
Offers online services

Payment methods

Credit Card, Check, Zelle

Details

Industry

Sales & marketing, Healthcare, Technology / IT, Manufacturing, Financial services, Education, Retail / consumer goods, Real estate, Construction, Non-profit, Other industries

Annual income

Less than $100K in revenue, $100K - $500K in revenue, $500K - $1M in revenue, $1M - $5M in revenue, $5M - $10M in revenue, Greater than $10M

Accounting software

QuickBooks, Quicken, TurboTax, Customer currently don't use any accounting software

Accounting needs

Balancing books / bookkeeping, Preparing tax returns, Managing AR and AP, Preparing financial statements

Accounting for

Individual or sole proprietorship, Partnership, C-Corp / Corporation, S-Corp, Non-profit

Reviews

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JWF

jos walter F.

He has providing me with support material with all tips steps by step for my business, thank you so much.
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December 05, 2023

DD

David D.

From initial contact, Mark conducts himself in a professional manner. I continue to remain satisfied with the tax preparation Mark did for me. From reviewing my 2015, 2016, and 2017 filings and working on my 2018 filing, I could not be happier with the results. I highly recommend working with Mark and will continue to use his services in the future. I will continue to make recommendations to friends and colleagues to use Mark as an accountant.
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March 11, 2019
Hired on Thervo

DD

David D.

March 11, 2019
Hired on Thervo

BW

Beth W.

Mark has been great to work with. He responded within a few short hours to my request for help and left a detailed voicemail when I couldn’t answer the phone. Mark responds quickly, gets the job done with little effort on your part (thank goodness!). He is now our CPA, nice to know we can call someone we can trust and get an answer immediately. So glad we found Thervo and gave it a go!
... Show more
March 07, 2019
Hired on Thervo

Frequently asked questions

I meet with the new client and gather their information, then prepare their returns.  I review the prior three years returns in order to determine if any prior opportunuties were missed for which an amended return may be filed.  I provide tax saving advice along the way.

I am a member of the AICPA, and the AICPA Tax Section.  Additionally, I am a member of several state societies.  Each year I spend about 50-60 on refreshing my knowledge as tax and accounting guidance changes.

I have worked with mostly couples, small businesses (up to $5M in revenue, trusts and estates).

First, make sure of their credentials.  CPAs can be verified through the state board of accounting or CPAVerify.org.  Unfortunately, there are some bad actors out there that are not in fact Certified Public Accountants.  Make sure of the credentials.

Is this a transaction (jsut tax preparation) or a relationship that is being built.


Services offered

Individual Tax Preparation
Accounting