US-Based Back-Office Support
Expert Solutions for Growing Enterprises
Your focus is on driving revenue. Ours is everything behind it — dedicated US-based team members handling your bookkeeping, reconciliations, invoicing, and payroll, scaling up or down as your needs change.
What We Do
Back-office excellence, delivered quietly
Four core service areas, one dependable partner. Every engagement is tailored to your business and scales with your growth.
Bookkeeping
Accurate books, clean reconciliations, and clear financial reporting — so you always know where your business stands.
Learn moreTax Preparation
Thorough, deadline-ready tax preparation for small businesses and individuals, backed by decades of hands-on experience.
Learn morePayroll Processing
Reliable, on-time payroll through trusted platforms — your team gets paid correctly, every time.
Learn moreAdditional Services
Zoho CRM and Sites support, Xero, QuickBooks, invoicing, HR, and more — flexible support that scales with you.
Learn moreWhy Nuumeric
A partner who has run businesses, not just books
Nuumeric is the evolution of Montgomery Business Solutions — a firm built on more than 28 years of hands-on financial leadership. We pair certified expertise with the practicality of someone who has managed teams, met payroll, and balanced daily operations.
- US-based team members — Real people, in your time zone, who learn your business.
- Scales with your needs — Expand or reduce support as your workload changes — no friction.
- Insured and bondable — Certificate of Insurance (COI) available upon request.
Who We Serve
Trusted across industries
From medical practices to main-street restaurants, Nuumeric keeps the numbers precise so owners can focus on what they do best.
Client Referral Program
Know a business that needs us? Earn $100.
Our best clients come from people like you. Refer a business owner to Nuumeric, and when they sign up for services, we’ll apply a $100 credit toward your next invoice as a thank-you.
Credit is applied to your next invoice after the business you refer completes their first paid month of service. No limit — every qualifying referral earns a credit.
Or just have them mention your name when they reach out.
Ready to hand off the back office?
Tell us what you need and we'll put together a tailored quote — no pressure, no obligation.