Modernize your accounting firm. Maximize your profits.
Software and human support to supercharge your firm’s efficiency.






Spend more time advising,
less time on tedious tasks
A Client Portal that reduces back and forth with clients
No more chasing. Harness generates personalized open items lists and questionnaires, auto-tags documents, and sends automated reminders.
A Client Portal that reduces back and forth with clients
No more chasing. Harness generates personalized open items lists and questionnaires, auto-tags documents, and sends automated reminders.

Client tax forms imported directly into your tax software & verified by our U.S. team.
TaxAssist delivers verified tax data directly into your tax engine. No onboarding, no training, no platform to learn. Just the prep work, done right.
Client forms imported directly into your tax software.
TaxAssist delivers verified tax data directly into your tax engine. No onboarding, no training, no platform to learn. Just the prep work, done right.

Dedicated concierge handles client questions and admin work for you
Engagement letters, client onboarding, e-filing, billing, reminders and simple client questions—covered.
< 1 Hour Concierge Response SLA
Dedicated concierge handles client questions and admin work for you
Engagement letters, client onboarding, e-filing, billing, reminders and simple client questions—covered.
< 1 Hour Concierge Response SLA

What success looks like with Harness
What success looks like with Harness

Tailor your solution with Harness

Technology & Tools
→ Collaboration Portal
→ Tax Tech

Expert Support
→ Concierge
→ Advisory Council

Growth & Exposure
→ Client Introductions
→ Marketing & Branding

Talent & Community
→ Talent Marketplace
→ Prof. Services Community
What makes Harness different?
Personalized, human support from Day 1
We onboard you in days, not months with a dedicated contact, and ongoing support always at your disposal.
Personalized, human support from Day 1
We onboard you in days, not months with a dedicated contact, and ongoing support always at your disposal.
