National Auditing Services & Consulting

What National Auditing Services & Consulting does

National Auditing Services & Consulting (NASC) is a privately held utility bill auditing and cost recovery firm headquartered in Monroe, Connecticut, operating across the United States. The firm was founded in 1987 by Carmine Nuzzi and serves businesses of all sizes — primarily in manufacturing, printing, food and beverage, food retail, senior living, and nonprofit verticals — by identifying billing errors, overcharges, and missed tax exemptions in utility invoices, then recovering refunds on a contingency-fee basis. NASC's core service line is electric and gas auditing, expanded to include real property tax audits (with a specialization in NYC Department of Finance abatement/exemption programs), telecom invoice audits, water and sewer audits, and energy procurement support for deregulated markets.

The underlying platform consists of proprietary auditing software that applies rate-structure-aware analysis to complex utility invoices, supported by an in-house team of utility auditors, accountants, regulatory staff, and engineers (4 engineers led by a Lead Engineer for site surveys) rather than the web-based virtual office model used by many competitors. Audits cover electric, gas, water/sewer, telecom/wireless, steam, propane, oil, diesel, and property tax, examining line charges, meter reads, surcharges, tariff-driven taxes, demand readings, and exemption eligibility. The company markets itself as the only utility auditing firm with an A+ Better Business Bureau rating.

NASC's business model is contingency-based with no upfront cost: clients sign a one-page Letter of Agreement and submit one month of utility bills for review, and NASC receives a percentage of refunds or credits secured only upon receipt — clients pay nothing if no savings are found. Go-to-market is sales-led through a national team of 11 energy consultants supervised by a VP of Business Development, supported by a referral partnership with Strategic Cost Reduction Partners (SCRP), a toll-free inbound phone line, the company website, and client testimonials. Multi-year contract cadence yields revenue in lumpy outcome-based transactions rather than recurring subscriptions.

Name

National Auditing Services & Consulting

Legal name

National Auditing Services & Consulting

Website

https://nationalauditingservicesconsulting.com

Company type

Private

Founded year

1987

Operating status

Operating

Headcount range

1–10 employees

Short description

National Auditing Services & Consulting (NASC) is a Monroe, Connecticut-based utility bill auditing and cost recovery firm that identifies overcharges and secures refunds for U.S. businesses across electric, gas, telecom, water/sewer, and property tax invoices using proprietary software and in-house engineering expertise on a contingency-fee basis.

Ownership category

akta.pro rank

Headquarters

HQ city

Monroe

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Technology or R&D, Others

Revenue model

1. Contingency-Based Audit Fees: NASC performs utility bill audits on a contingency fee basis. The company receives a percentage of any refunds or credits secured on behalf of clients, payable only upon receipt of the refund. If no savings or refunds are found, the client pays nothing. This creates a risk-free proposition for clients while aligning NASC's incentives with client outcomes.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels4 records

Core offering

National Auditing Services & Consulting (NASC) is a specialty auditing and cost recovery firm that reviews utility, telecom, property tax, and water/sewer invoices for U.S. businesses to identify overcharges, recover past overpayments, and reduce ongoing utility spend. Engagements are performed on a contingency-fee basis, so clients pay nothing upfront and NASC earns a percentage of refunds or credits it secures from utilities, municipalities, and tax authorities.

Product overview

NASC is a utility bill auditing and cost recovery firm offering five distinct service lines: Electric & Gas Auditing, Real Property Tax Auditing, Telecom Audit, Water & Sewer Auditing, and Energy Procurement. These services are delivered through a contingency-based model where clients pay only upon receiving refunds or credits. The company uses proprietary auditing software and employs utility auditors, accountants, and engineers to identify billing errors and recover overcharges across all utility types.

Differentiator

Problem solved

Functional benefit

Products and services

• Electric & Gas Auditing Comprehensive auditing of electric and gas utility bills for U.S. businesses, identifying overcharges, billing errors, rate optimization opportunities, and energy-related tax exemption management, with services performed on a contingency-fee basis.
• Real Property Tax Auditing NYC-focused property tax audit services that evaluate tax liability against current and historical property class tax rates, identify missed exemptions (e.g., SCRIE, DRIE, J-51) and other tax abatement programs, and recover overcharges through coordination with the New York City Department of Finance.
• Telecom Audit Detailed historical review of telecommunications and wireless invoices for businesses, identifying billing errors, duplicate charges, unauthorized third-party charges, and overcharges for cost recovery on a contingency-fee basis.
• Water & Sewer Auditing Nationwide water and sewer bill audits for multifamily, commercial, industrial, institutional, and municipal customers, validating meter reads, rates, and service classes; identifying sewer charge relief, irrigation overcharges, leak adjustment gaps, and back-billing recovery opportunities.
• Energy Procurement Deregulation support services that help U.S. businesses evaluate electricity and gas supplier pricing, tariffs, and contract terms through load profile analysis, competitive bidding, contract vetting, and ongoing invoice monitoring to secure competitive energy rates.

Quantifiable outcome

• Over 70% of audits contain overcharges
• +3 more outcomes

Named customers19 records

Segments6 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature1 record

Partnerships

Five partnerships are on record, tiered core.

• Jason Ewing - Northern Sales Partners (NorthernUS, Inc.)coreGTM or Marketing Partner · 1 January 2026Jason Ewing is Partner and Director at NASC and Managing Director of Northern Sales Partners (NorthernUS, Inc.). He brings nearly three decades of experience in energy, telecommunications, and marketing markets spanning North America and Europe, with a distinctive methodology of turning business development into closed revenue on a performance basis.
• Strategic Cost Reduction Partners (SCRP)coreGTM or Marketing Partner · 1 January 2017Michael Macchi runs Strategic Cost Reduction Partners (SCRP), where NASC is SCRP's primary partner for helping businesses and nonprofits address overcharges, cost reductions, and refunds relating to utility expenses. SCRP has clients throughout the country and is active in several Trade Associations.
• Dave FostercoreStrategic or Co-development Partner · 1 January 2014Dave Foster joined National Auditing Services in 2014 as Vice President of Business Development. He serves as the primary contact for many of NASC's largest clients and supervises a team of 11 energy consultants. He focuses on NYC Department of Finance and DEP issues as well as expanding NASC's presence outside the NYC and CT areas for Electric and Gas Refunds.
• 11 Energy Consultants TeamcoreStrategic or Co-development Partner · 1 January 2014Dave Foster supervises a team of 11 energy consultants who work on client accounts across various markets including MA, MD, MI, and FL. This team structure has helped propel National Auditing Services to become the country's premier utility bill auditing and consulting firm.
• Rich GreensteincoreStrategic or Co-development Partner · 1 January 2008Rich Greenstein joined National Auditing Services in 2008 as Lead Engineer. He leads a team of 4 engineers that conduct site surveys for refund clients requiring facility verification. He also serves as one of NASC's 11 Energy Consultants, concentrating on securing refunds for craft breweries.

Scale indicators7 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Criterion365: Energy management and utility cost recovery firm that conducts utility and telecom invoice audits for businesses and institutions. Comparable in service scope and contingency-based delivery.
• Vendor Management Corporation: Provides telecom, wireless, and utility expense management including invoice auditing and contract negotiation. Overlaps with NASC's Telecom Audit and broader cost recovery practice.
• utiliSave: Utility cost recovery and bill auditing firm specializing in identifying overcharges across electric, gas, water, sewer, and telecom for commercial customers. Directly comparable in service lines and GTM.
• National Utility Service: Direct competitor offering utility bill auditing, cost recovery, and energy management for commercial clients across the U.S. and U.K. Closely mirrors NASC's core service model and customer base.
• The BBI Group: Utility and telecom expense management and audit firm for commercial customers. Overlaps with NASC's recovery-focused, multi-utility invoice audit approach.
• ProfitOptics: Cost reduction consultancy focused on utility, telecom, waste, and payment processing audits for mid-market and enterprise customers. Competes on the same contingency-fee recovery model.
• MDSi: Telecom expense management and audit specialist focused on identifying billing errors, recovering overcharges, and managing wireline/wireless spend — directly competitive with NASC's Telecom Audit practice.
• Energy Management Solutions: Utility bill auditing and energy procurement consultancy serving commercial and industrial clients. Comparable in both contingency-based audit recovery and procurement offerings.

Broad incumbents

• Tangoe: Established technology-enabled telecom, mobile, and cloud expense management platform with automated invoice auditing. A larger, software-first alternative to NASC's manual audit model.
• Cass Information Systems: Public company providing telecom, utility, and freight expense management and invoice payment services at scale. Adjacent incumbent with overlapping telecom/utility audit capabilities within a broader spend management portfolio.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles11 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about National Auditing Services & Consulting