About us
About Celerity
Celerity Accounting partners with fast-moving companies on NetSuite and QuickBooks Online to deliver real-time accounting, automation, and clarity at scale.
We built Celerity to fix what traditional accounting gets wrong: slow communication, messy handoffs, and zero visibility.
Our approach is proactive: real-time insights, automation that removes work, and a team that feels like an extension of yours.
How We Work
We take pride in our ability to offer efficient, easily understandable, and reliable financials to amazing small business owners.
Communication
We prioritize communication with our clients. Clear expectations. No Surprises.
Accuracy
Every number double-checked. Every report built for clarity.
Tech that saves you time.
Automation, integrations, and dashboards that deliver answers instantly.
Our Core Behaviors
1Partner Beyond the Numbers
Build relationships that matter. Be approachable, curious, and proactive. Show up as a true ally who clients trust and enjoy working with. Understand their goals, anticipate their needs, and make every interaction valuable.
2Own It and Follow Through
Do what you say you’ll do every time. Communicate clearly, meet deadlines, and follow through with reliability and integrity. If something goes sideways, speak up early and take initiative to find a solution.
3Show Up with Excellence
Bring energy, positivity, and ownership every day. Strive to improve yourself, your team, and your work. Excellence isn’t perfection. It’s caring enough to always push for better.
4Leverage Technology for Impact
Use tools, automation, and innovation to make things simpler, faster, and more effective. Stay ahead of the curve and keep learning new ways to deliver accuracy, speed, and insight.
Who we are
We're a team of experts with over 16 years of combined bookkeeping and accounting experience.

Tailor Hartman
CEO & Founder
CEO who loves building systems and talking with cilents.

Sherrine Taylor
Client Accounting Lead
Loves simplifying complexity and building structure

Heather Mershon
Staff Accountant
Loves to automate using the latest technologies

Seng Taylor
Staff Accountant
Love to organize and handle recurring work

Jackie O'Neil
Accounting Support
Loves entering bills, sending invoices, and chatting with client's
Human Proof
- Trusted by 30+ growing companies on NetSuite & QuickBooks Online
- Recognized as a Top 40 Under 40 CPA
- Top 50 Modern Accounting Firm of 2025
- Based in Madison, WI and serving clients nationwide
Reach Out to Us.
Whether in person, over the phone, or over email. We're here when needed.
Address
708 Heartland Trail Suite 300 Madison, WI 53717
info@celerity.io
Phone
Text or Call us at
(608) 602-4573
Interested in a Job @ Celerity Accounting
Check out our openings or get in touch with us about hiring!