Karissa Cost, CPA

New York / Remote Office

Karissa's Tax Experience

Snapshot and Years of Experience

Karissa Cost has over 20 years of tax and leadership experience, primarily with a ‘Big 4’ public accounting firm and $9 billion multi-national corporation. Her core proficiencies are tax reporting and tax compliance for highly transactional, publicly traded, global corporations. Additionally, Karissa holds substantial consulting and hands-on experience in tax process redesign, technology, and transformation initiatives.

Tax Accounting

  • Global consolidation of Non-GAAP and GAAP tax provisions and related balance sheet accounts on a monthly, quarterly, and annual basis
  • Tax accounting for federal, state, non-US, and topside operations
  • GILTI, FDII, foreign tax credits, 163(j), BEAT, and transition tax 
  • Uncertain tax positions and valuation allowance calculations/documentation
  • Internal control design and risk-management practices under SOX 404 
  • Audit of tax provisions in accordance with US GAAP and/or IFRS
  • Effective tax rate and cash tax forecasting
  • Deferred tax studies and current tax account proofs
  • Opening balance sheet and acquisition accounting with transaction cost analysis

Tax Compliance

  • Consolidated, federal, and state corporate income tax filings
  • Pass-through entity tax returns with basis tracking
  • Tax reform computations, including E&P analysis
  • Tax controversy
  • Country-by-country reporting

Tax Planning and Project Management

  • Modeling for effective tax rate, cash tax, and attribute utilization initiatives
  • Accounting method changes
  • Tax basis balance sheets
  • Domestic legal entity rationalizations
  • Tax implications for transactions under IRC Sections 332, 351, 355, and 368
  • Tax operating model design post-acquisition/divestiture 
  • Tax-specific ERP considerations and efficiencies
  • Development of multiple tax reporting and compliance tools 
  • Tax software implementations or conversions
  • Tax process redesign/automation/standardization

Tax Technology Experience

  • Corptax, ONESOURCE, Longview
  • Advanced Microsoft Excel plus Microsoft Word, PowerPoint, Outlook
  • Alteryx
  • Lawson, SAP, S/4 Hana, HFM, Essbase

Previous Work Experience

  • 3M Company
  • PVH Corp.
  • Dixon Hughes Goodman LLP


  • University of Virginia,
    Master of Science, Accounting
    (Tax Consulting)
  • West Virginia Wesleyan College,
    Bachelor of Science, Accounting
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