Domestic Tax Associate

Req ID #:  199612

US Wilmington, MA, US, 01887

For 75 years, Charles River employees have worked together to assist in the discovery, development and safe manufacture of new drug therapies. When you join our family, you will have a significant impact on the health and well-being of people across the globe. Whether your background is in life sciences, finance, IT, sales or another area, your skills will play an important role in the work we perform. In return, we’ll help you build a career that you can feel passionate about.


IMPORTANT:   In order to be considered for this position, a resume/CV must be uploaded and submitted during the application process.  Please make sure work history and education are added correctly.   

Job Summary


Responsible for preparing workpapers to complete the US Federal and state tax reporting and compliance, as well as assisting with the quarterly and year-end provision, provision to return adjustments, maintenance of the US tax related balance sheet accounts and US fixed assets. 




  • Preparation of estimated tax payments and extensions, including all required forms/vouchers using tax software.
  • Preparation of state corporate income tax apportionment workpapers. 
  • Preparation of federal and state workpapers and corresponding tax return using Onesource
  • Preparation of state corporate income tax credits and certification filings. 
  • Prepare forecasts of significant permanent items and deferred tax adjustments for monthly ETR calculations and quarterly tax provisions.
  • Assist in the preparation of the year-end provision and Onesource input for US entities and the review of US Federal and State provision to return adjustments.
  • Assist with corporate income tax audits. 
  • Research and respond to inquiries and notices from state and local taxing authorities, vendors, customers, and company personnel.
  • Monitor corporate income tax developments, including state corporate income tax rates, apportionment methodologies, filing group requirements, and state modification changes. Remain current on tax law changes and changes in the business activities of the company
  • Proactively manage and maintain provision and compliance deadlines
  • Prepare and review book-tax difference computations and tie-out of deferred tax assets/liabilities
  • Assist with maintaining tax depreciation using SAGE software
  • Perform all other related duties as assigned.

Job Qualifications

  • Bachelor’s degree (B.A./B.S.) or equivalent in Finance, Accounting, or related discipline. 
  • Two to four years directly related experience.
  • An equivalent combination of education and experience may be accepted as a satisfactory substitute for the specific education and experience listed above.
  • Certificate/Licensure: CPA or CPA eligibility is preferred.
  • Strong, communication, project management and organization skills required. Must be proficient in Microsoft Word, Excel, and PowerPoint. Knowledge of tax software (Onesource) is a plus.

IMPORTANT: A resume is required to be considered for this position. If you have not uploaded your resume in your candidate profile, please return to upload field and attach your resume/CV. 

About Corporate Functions
The Corporate Functions provide operational support across Charles River in areas such as Human Resources, Finance, IT, Legal, Sales, Quality Assurance, Marketing, and Corporate Development. They partner with their colleagues across the company to develop and drive strategies and to set global standards. The functions are essential to providing a bridge between strategic vision and operational readiness, to ensure ongoing functional innovation and capability improvement.  


About Charles River
Charles River is an early-stage contract research organization (CRO). We have built upon our foundation of laboratory animal medicine and science to develop a diverse portfolio of discovery and safety assessment services, both Good Laboratory Practice (GLP) and non-GLP, to support clients from target identification through preclinical development. Charles River also provides a suite of products and services to support our clients’ clinical laboratory testing needs and manufacturing activities. Utilizing this broad portfolio of products and services enables our clients to create a more flexible drug development model, which reduces their costs, enhances their productivity and effectiveness to increase speed to market.

With over 20,000 employees within 110 facilities in over 20 countries around the globe, we are strategically positioned to coordinate worldwide resources and apply multidisciplinary perspectives in resolving our client’s unique challenges. Our client base includes global pharmaceutical companies, biotechnology companies, government agencies and hospitals and academic institutions around the world.
At Charles River, we are passionate about our role in improving the quality of people’s lives. Our mission, our excellent science and our strong sense of purpose guide us in all that we do, and we approach each day with the knowledge that our work helps to improve the health and well-being of many across the globe. We have proudly supported the development of 86% of the drugs approved by the FDA in 2021.

Equal Employment Opportunity
Charles River Laboratories is an Equal Opportunity Employer - all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, or national origin, veteran or disability status.

If you are interested in applying to Charles River Laboratories and need special assistance or an accommodation due to a disability to complete any forms or to otherwise participate in the resume submission process, please contact a member of our Human Resources team by sending an e-mail message to This contact is for accommodation requests for individuals with disabilities only and cannot be used to inquire about the status of applications.
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