SUM THEORY + ONPHASE

AP Automation Meets Implementation Excellence

onPhase automates AP and payments from capture to close. Sum Theory has spent 25+ years mastering how to get finance systems live and deliver results. Together, finance teams get automation that delivers value faster, with deployments that are seamless, predictable, and built to last.
SumTheory + onPhase

 A strategic alliance to scale automation delivery

As organizations increasingly seek to modernize finance operations, this partnership enables both companies to meet rising demand with a unified approach to solution delivery and customer success. By aligning onPhase's end-to-end AP automation and payments capabilities with Sum Theory's more than 25-year track record supporting the Office of Finance, the collaboration provides clients with accelerated implementation velocity, operational excellence through proven delivery methodology, and stronger customer enablement through joint programs and unified governance models.
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Benefits for onPhase customers

 

Accelerate implementation with Sum Theory's 25+ years of Office of Finance expertise and 300+ successful deployments. Reduce complexity and risk through proven delivery methodology that ensures quality, compliance, and faster time to value. Get expert guidance on workflow design, ERP integration, and change management that helps teams realize automation benefits quickly and confidently.

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Benefits for Sum Theory customers

 

Expand automation capabilities with onPhase's comprehensive AP and payments platform that streamlines capture-to-pay workflows, strengthens financial controls, and reduces manual effort at scale. Leverage AI-powered automation with embedded payments and intelligent workflow orchestration, all delivered through Sum Theory's trusted implementation approach for seamless integration and measurable business outcomes.

Sum Theory at a Glance

Sum Theory has been helping finance teams implement complex systems for over 25 years. They're not consultants who show up with a slide deck and disappear. They're in the trenches with you, solving real problems and making sure your systems actually work together. With 300+ successful implementations under their belt, they've seen every scenario and know how to navigate the messy reality of enterprise finance automation.

• 25+ years deep in the Office of Finance

• 300+ implementations that actually went live and delivered

• Experts in financial close, ERP integration, and the workflows that connect them

• A methodology that's been proven in the field, not just on paper

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Faster go-lives:

No more year-long implementation projects. Get up and running in weeks, not months.

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Less risk, more confidence:

Combined platform and expertise means fewer surprises and cleaner deployments.

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Training that sticks:

Your team learns from people who've trained hundreds of finance teams before. 

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Systems that talk to each other: 

Deep ERP integration knowledge means everything actually connects. 

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Interested in partnering with onPhase? Let's connect!