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Stefan Thomas Email & Phone Number

Tax Director - US Compliance and Global Tax Accounting at Filtration Group
Location: Greater Chicago Area, United States 10 work roles 1 school
1 work email found @filtrationgroup.com LinkedIn matched
✓ Verified August 2026 4 data sources Profile completeness 100%

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Current company
Role
Tax Director - US Compliance and Global Tax Accounting
Location
Greater Chicago Area, United States
Company size

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Stefan Thomas is listed as Tax Director - US Compliance and Global Tax Accounting at Filtration Group, a with 1257 employees, based in Greater Chicago Area, United States. AeroLeads shows a work email signal at filtrationgroup.com and a matched LinkedIn profile for Stefan Thomas.

Stefan Thomas previously worked as Tax Director - US Compliance & Global Tax Accounting at Filtration Group and Tax Senior Manager - Business Tax Services at Deloitte. Stefan Thomas holds Bachelors Of Science, Accountancy from Northern Illinois University.

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{first}.{last}@filtrationgroup.com
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Profile bio

About Stefan Thomas

Tax director with extensive experience with US federal corporate tax compliance, consulting, and ASC 740 across a wide range of industries and with companies ranging from middle market to large multinational organizations.The first ~10 years of my career were spent at Deloitte where I mainly focused on large, multinational corporate tax engagements out of the Chicago office. I worked extensively on corporate tax returns, ASC 740 consulting, tax provision preparation and audits, subchapter C issues (i.e. 382 considerations, reorganizations, cancellation of indebtedness, worthless stock deductions, etc.) and other miscellaneous consulting. For my last ~4 years, I was also a leader in the corporate tax group when it came to the development of the professionals in the group as I led efforts to organize, develop, and lead CPE and other learning sessions for professionals from interns to partners.More recently, I've been involved in the rapid expansion and development of the tax team at Filtration Group with a focus on the global tax provision process and domestic tax compliance. My first few years have been focused on completely revamping the year-end close process and creating from scratch a new quarterly provision process. I've also led efforts to bring more of the overall tax compliance process in-house from what was previously a fully outsourced model.

Listed skills include Auditing, Business Ethics, Expatriate Tax, Powerpoint, and 48 others.

Current workplace

Stefan Thomas's current company

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Filtration Group
Filtration Group
Tax Director - US Compliance and Global Tax Accounting
Chicago, IL, US
Employees
1257
AeroLeads page
10 roles

Stefan Thomas work experience

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Tax Director - Us Compliance And Global Tax Accounting

Chicago, Il, Us

Tax Director - Us Compliance & Global Tax Accounting

Current

Oakbrook Terrace, Illinois, Us

As the tax director at Filtration Group, I've been tasked with and have implemented several key changes as part of an overall leveling up of the company's tax processes. Within my two years, the following are just some of the accomplishments I've driven within the tax function: - Develop a quarterly tax provision process from scratch, including retroactively computing quarterly provisions for 2 earlier years- Develop standardized workpapers and memos with respect to uncertain tax positions, valuation allowances, and the company's indefinite reinvestment assertion- Enhance the annual provision process to establish a clear calendar, lines of responsibilities, and bring the entire process in house- Implement current and retroactive ASC 842 tax adjustments- Develop standardized workpapers with respect to opening balance sheet deferred taxes and income taxes payable for acquisitions- Completely revamp the tracking of goodwill and intangible deferred taxes- Established new process when it comes to computing and tracking share based compensation permanent and deferred tax adjustments- Develop standardized processes with respect to complex book-tax adjustments such as derivatives, foreign exchange gain/loss, debt modifications, and AOCI adjustments- Overhauled the state provision and state estimate workpapers to run more efficiently, effectively, and comprehensively - Created a tax footnote workpaper completely linked to tax provision workpapers- Managed the transition of tax compliance services between service providers and transitioned tax depreciation and UNICAP calculations from external service providers to the in-house team- Develop the ASC 740 skillset of the entire team through one-on-one trainings and team-wide lunch and learns- Establish and document internal control procedures to comply with SOX requirements- Proactive management of external, PCAOB-standard audit process resulting in no externally identified adjustments while under my purview

Feb 2022 - Present

Tax Senior Manager - Business Tax Services

Worldwide, Oo

As a tax specialist working out of the Deloitte Chicago office, I had the privilege to serve a diverse and prestigious set of clients while also working within one of the most sophisticated and cutting edge groups of tax professionals in the country.My area of focus, strength, and interest was in corporate income taxation, with half of my time spent on ASC 740 and the other half spent on income tax compliance and Subchapter C issues. My client base spanned several industries, including manufacturing, retail, restaurant, technology, insurance, and financial services. Finally, I was a leader when it comes to the training of other professionals on tax technical topics, tax software, and professional development skills both within the United States and across the world.- Lead up to 20 client engagements as the main point of contact with directly managed revenue of up to $2M annually- Developed a robust understanding of various tax areas such that I was able to lead and support the delivery of tax projects covering federal, state, international, indirect, and employee tax issues generating on average $500k - $1M of additional revenue annually- Oversee teams of 2 – 10, along with the coordination of multiple specialty groups, in the delivery of income tax returns and preparation and audit of income tax provisions for large and complex multinational corporations- Lead and coordinate 20 - 25 trainings per year covering tax technical topics including federal tax accounting, subchapter C, ASC 740, and proposed or effectuated tax law changes which include on average between 15 and 60 participants ranging from interns to partners

May 2021 - Feb 2022

Tax Manager - Business Tax Services

Worldwide, Oo

- Oversee teams of 2 – 8 in the delivery of corporate income tax returns and tax provision calculations along with the audit of income tax provisions, including the implementation of process improvements to standardize approaches and better leverage staff both in and outside of the United States which increased engagement profitability without sacrificing work quality- Research and analyze federal, state, and international tax technical matters to resolve questions with respect to ASC 740 and income tax return filings, including the preparation of technical memorandums thoroughly documenting the analysis- Support national subchapter C competency leader with various tax planning and restructuring projects along with the development of content for national competency calls- Lead the development of tax professionals both in the US and in India by coordinating and conducting trainings covering tax technical, tax software, and professional development skills locally and virtually

Aug 2017 - May 2021

Tax Senior Consultant - Business Tax Services

Worldwide, Oo

- Oversee teams of 2 – 3 consultants in the preparation of corporate and partnership income tax returns and income tax provisions- Coordinated, as the lead tax senior, the income tax audit with respect to mid-sized, large private, and large public corporations

Aug 2015 - Aug 2017

Tax Consultant - Business Tax Services

Worldwide, Oo

- Prepared and reviewed US and state corporate and partnership income tax returns- Prepared and reviewed domestic income tax provisions for mid-sized companies- Audited income tax provisions for mid-sized to large corporate companies

Apr 2014 - Aug 2015

Tax Consultant - Global Employer Services

Worldwide, Oo

- Prepared US federal and state tax returns for US inbound and expatriate individuals- Collaborated on several international assignment consulting projects, including the coordination with up to 40 different foreign offices on the delivery of services

Jul 2012 - Apr 2014

Office Assistant

Teamsters Local 781
May 2011 - Jun 2012
Team & coworkers

Colleagues at Filtration Group

Other employees you can reach at filtrationgroup.com. View company contacts for 1257 employees →

1 education record

Stefan Thomas education

  • Northern Illinois University
    Northern Illinois University
    Accountancy
FAQ

Frequently asked questions about Stefan Thomas

Quick answers generated from the profile data available on this page.

What company does Stefan Thomas work for?

Stefan Thomas works for Filtration Group.

What is Stefan Thomas's role at Filtration Group?

Stefan Thomas is listed as Tax Director - US Compliance and Global Tax Accounting at Filtration Group.

What is Stefan Thomas's email address?

AeroLeads has found 1 work email signal at @filtrationgroup.com for Stefan Thomas at Filtration Group.

Where is Stefan Thomas based?

Stefan Thomas is based in Greater Chicago Area, United States while working with Filtration Group.

What companies has Stefan Thomas worked for?

Stefan Thomas has worked for Filtration Group, Deloitte, Teamsters Local 781, and Northern Illinois University.

Who are Stefan Thomas's colleagues at Filtration Group?

Stefan Thomas's colleagues at Filtration Group include Lashanda James, Ebony Mcclinton, 한태희, Helmuth Szemenyei, and Phil Madonia.

How can I contact Stefan Thomas?

You can use AeroLeads to view verified contact signals for Stefan Thomas at Filtration Group, including work email, phone, and LinkedIn data when available.

What schools did Stefan Thomas attend?

Stefan Thomas holds Bachelors Of Science, Accountancy from Northern Illinois University.

What skills is Stefan Thomas known for?

Stefan Thomas is listed with skills including Auditing, Business Ethics, Expatriate Tax, Powerpoint, Cpa, Income Tax, Accounting, and Sound.

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