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Indirect Tax • Tax Technology • Transformation • Governance

Indirect Tax Operations.
Transformed.

Helping mid-market and enterprise organizations manage indirect tax risk, optimize tax technology, and navigate complex business transformations — without disruption.

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$200M+
Tax Credits Supported
$67M+
Credits Defended
31+
Years of Experience
ZERO
SAP Go-Live Failures
Core Services

What we do

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Indirect Tax Advisory
Strategic advisory for complex multistate and multinational indirect tax environments.
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Tax Technology
Avalara and ONESOURCE implementation, optimization, and SAP tax workstream advisory.
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Audit Defense
Audit strategy, documentation governance, data validation, and 100% credit preservation.
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ERP Transformations
SAP and ERP tax readiness, configuration, testing, and zero-failure go-live support.
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Compliance Optimization
Streamlining indirect tax compliance workflows, reporting processes, and internal controls.
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Fractional Leadership
Executive indirect tax leadership on a flexible hourly or monthly engagement model.
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Why CONTINUAX

A tax advisory firm that speaks
the language of technology.

01
CONTINUITY
No gaps. No surprises. Your indirect tax function stays optimized and compliant year-round.
02
CLARITY
Complex indirect tax matters made simple, actionable, and clearly communicated at every level.
03
CONFIDENCE
Every obligation met with precision so your business never loses momentum due to tax disruption.
04
EXECUTION
Not just advice — hands-on delivery alongside your team at every stage of your transformation.
Client Results

Featured case studies

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SAP Transformation
Enterprise SAP Rise upgrade — zero indirect tax failures at go-live
Tax risk assessment, UAT coordination, and full production readiness validation across all business units.
Result
Zero tax determination failures. Zero invoicing disruptions.
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Audit Defense
$67M+ in federal tax credits preserved — 100% success rate
Comprehensive audit defense strategy and documentation governance framework preserved every dollar claimed.
Result
100% of $67M+ in credits preserved. Zero credits lost.
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Tax Engine Optimization
Complex fuel tax determination redesigned — compliance exposure eliminated
Tax law translated into precise system logic and production rules supporting evolving business operations.
Result
Improved accuracy. Compliance exposure fully eliminated.
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CJ
About the Founder
Cynthia Johnson
Founder & Principal Indirect Tax Advisor
31+ years of indirect tax leadership across energy, renewables, chemicals, manufacturing, and technology. Formerly with Neste, Shell, SABIC, CITGO, and Avalara. Founder of CONTINUAX LLC.
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Industries We Serve

Deep sector expertise

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⚡
Energy
Upstream, midstream & downstream indirect tax complexity
☀
Renewables
Biofuel, solar, wind — credits, incentives & compliance
⚙
Manufacturing
Multistate manufacturing exemptions and use tax
🧪
Chemicals
Feedstock, excise & complex product taxability
💻
Technology
SaaS, software & digital tax determination
🚚
Distribution
Multistate distribution tax strategy & compliance
🌐
Multistate Operations
Complex multistate tax planning & nexus management
🔗
Complex Supply Chains
End-to-end supply chain tax strategy & optimization
Get Started

Ready to transform your
indirect tax operations?

Schedule a consultation with Cynthia Johnson to discuss your tax technology, audit defense, or transformation project.

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