Grant Street Group

What Grant Street Group does

Grant Street Group, LLC is a privately held Pittsburgh-based SaaS provider founded in 1995 that builds secure, hosted software exclusively for U.S. government tax, payment, and auction operations. Its platform comprises three core product lines: TaxSys (cloud-based tax billing, collection, and distribution for county and state tax offices), PaymentExpress (multi-channel electronic payment processing supporting credit cards, contactless/tap-to-pay, digital wallets, ACH/e-checks, and open banking), and the MuniAuction/LienAuction/DeedAuction suite (online auctions for municipal bonds, delinquent tax lien certificates, and tax-defaulted property sales). Underlying technology runs on Linux-based hybrid AWS and on-premises infrastructure with PCI-DSS Level 1 v4.0, SOC 1/2, NIST, and NACHA compliance, supplemented by the VisionPro BI layer (now ML-enabled), Data Insights dashboards, and the Buckeye Billfold crypto-payment wallet.

Revenue is generated through multi-year SaaS subscriptions (quote-based, RFP-driven enterprise contracts with county and state governments), per-transaction processing fees on PaymentExpress volume, and transaction fees on auction events. Go-to-market is enterprise field sales navigating government procurement cycles, with a self-service portal for bond/lien bidders; the company maintains 500+ full-time professionals, processes roughly $100 billion in annual transaction volume across its platforms (over $70B in TaxSys payments and over $30B in PaymentExpress e-payments in 2024), and has cumulatively hosted more than $13 trillion in MuniAuction volume since 1997. Customer base spans hundreds of U.S. county tax collectors and state revenue/MV agencies, with notable anchors including Los Angeles County (selected 2026), 30+ Florida counties, all 159 Georgia counties via PaymentExpress, and state engagements in Ohio, South Dakota, Washington, Massachusetts, and Hawaii.

Name

Grant Street Group

Legal name

Grant Street Group, LLC

Website

https://grantstreet.com

Company type

Private

Founded year

1995

Operating status

Operating

Headcount range

251–500 employees

Short description

Grant Street Group is a privately held Pittsburgh SaaS provider founded in 1995 that builds secure, hosted tax collection (TaxSys), electronic payment (PaymentExpress), and online auction (MuniAuction) software exclusively for U.S. county and state government agencies.

Ownership category

akta.pro rank

Product category

Government Tax & Payment Software

NAICS

Financial Transactions Processing, Reserve, and Clearinghouse Activities (522320)

SIC

Services-Computer Programming, Data Processing, Etc. (7370), Finance Services (6199)

akta.pro primary industry

Revenue Systems, E-Filing & Digital Tax Administration (BPAIADAO)

akta.pro secondary industries

Taxpayer Registration, Identity & Account Management (BPAIADAB), Government & Public Sector ACH (Tax, Benefits, Collections) (FSAMAGAH)

Keywords

• Government software solutions
• Tax collection software
• Government payment processing
• Municipal bond auctions
• Online tax lien auctions

Headquarters

HQ city

Pittsburgh

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Software

Cost components

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

Revenue model

1. TaxSys SaaS Platform: Cloud-based tax billing, collection, and distribution SaaS platform serving government agencies. Revenue generated through subscription fees for hosted software services.
2. PaymentExpress Processing: Payment processing platform for government transactions. Volume-based processing fees for handling electronic payments across multiple channels including credit cards, digital wallets, and e-checks.
3. Online Auction Services: MuniAuction platform hosting municipal bond auctions, delinquent tax lien auctions (LienAuction), and tax-defaulted property sales (DeedAuction). Transaction fees for auction processing.
4. Crypto Payment Processing: Cryptocurrency payment processing for government services through Buckeye Billfold platform. Automatic conversion to fiat currency for immediate state deposit.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels4 records

Core offering

Grant Street Group develops and operates a cloud-based SaaS platform that helps U.S. government agencies modernize tax billing and collection (TaxSys), accept electronic payments across all channels (PaymentExpress), and run online auctions for municipal bonds, delinquent tax liens, and tax-defaulted properties (MuniAuction, LienAuction, DeedAuction). The platform is purpose-built for state, county, and municipal tax collectors, revenue departments, and motor vehicle agencies, with PCI-DSS Level 1 security and integrated business intelligence tooling.

Product overview

Grant Street Group provides an enterprise-scale SaaS platform with three core product lines: TaxSys (cloud-based tax billing and collection), PaymentExpress (comprehensive payment processing), and MuniAuction/LienAuction/DeedAuction (online auction services for municipal bonds and delinquent property). These integrate with add-on modules including VisionPro business intelligence, Data Insights dashboards, LienHub tax certificate portal, RenewExpress self-service renewals, EscrowExpress, and TitleExpress for motor vehicle services. The company also powers government digital wallets like Ohio's Buckeye Billfold for cryptocurrency payments. The platform is built for government complexity with PCI-DSS Level 1 security, supporting over 500 government clients across tax collection, e-payments, and financial auctions processing over $100 billion in transactions annually.

Differentiator

Problem solved

Functional benefit

Brands

• TaxSys: Cloud-based tax billing and collection system for government agencies
• PaymentExpress
• LienAuction
• DeedAuction
• MuniAuction
• VisionPro
• gLabs
• LienHub
• RenewExpress
• EscrowExpress
• TitleExpress

Products and services

• TaxSys A hosted, web-based SaaS solution for tax calculation, billing, collection, and distribution, designed for government tax administration at county and state level. Automates complex workflows, streamlines constituent services, and adapts to new legislation; processed over $70 billion in tax payments in 2024.
• PaymentExpress A comprehensive government payment processing platform that unifies payment collection, management, and reporting across in-person, online, mobile, and phone channels. Supports credit cards, contactless/tap-to-pay, digital wallets, e-checks, and scheduled payments; processed over $30 billion in e-payments in 2024.
• LienAuction Online auction platform for delinquent tax lien certificate auctions that streamlines the collection process for tax offices, increases bidder competition, and provides transparency into the delinquent collection process.
• DeedAuction Online auction platform for tax-defaulted property sales that streamlines processes for tax offices and provides transparency into the delinquent collection process.
• MuniAuction Online municipal debt sales platform that hosts auctions for bonds, notes, guaranteed investment contracts (GICs), and certificates of deposit (CDs). Has hosted over $13 trillion in auction volume since 1997.
• Buckeye Billfold Digital wallet platform enabling cryptocurrency payments for state government services, with automatic conversion to U.S. dollars at transaction completion to ensure immediate deposit into the state's banking system.
• Motor Vehicle Services A suite of specialized payment and workflow solutions for motor vehicle agencies, including in-office point-of-sale devices, online forms with approval workflows, voter registration, vehicle registration, driver's license processing, and digital wallet acceptance, delivered through PaymentExpress.

Quantifiable outcome

• TaxSys processed over $70 billion in tax payments in 2024
• +9 more outcomes

Named customers17 records

Segments4 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

Integration6 records

AI capability5 records

Feature10 records

Partnerships

Three partnerships are on record, tiered core and supporting.

• Ohio State Board of DepositcoreStrategic or Co-development Partner · 1 September 2025Ohio State Board of Deposit authorized Grant Street Group in September 2025 to facilitate cryptocurrency payment processing for state fees and services through the Buckeye Billfold digital wallet platform, making Ohio the first state to authorize statewide acceptance of digital asset payments.
• FAST EnterprisescoreTechnology or IntegrationFAST Enterprises collaborated with Grant Street to deliver a modern payment experience for South Dakota Department of Revenue, with seamless integration between FAST's systems and PaymentExpress.
• Trustly, Inc.supportingTechnology or IntegrationThird-party open banking provider enabling bank login authentication for payments through Grant Street's platform. Trustly operates the interface for users to authenticate with their bank and select accounts for payment.

Scale indicators9 records

Expansion highlights6 records

Direct peers

• NIC Inc. NIC Inc. (now part of Tyler Technologies) pioneered government online payments and portal services. Historically the canonical peer to Grant Street's payment-processing business for state agencies.
• GovOS: GovOS offers government technology solutions for tax administration, licensing, and payments. It directly competes with Grant Street in the county/state tax and payment modernization niche.
• FAST Enterprises: FAST Enterprises builds large-scale tax and revenue administration software for state and federal governments. It is the closest direct competitor to TaxSys and is already an integration partner, making it the most directly comparable peer to Grant Street.
• PayIt: PayIt provides digital government payment and citizen experience platforms for state and local agencies. It competes directly with PaymentExpress on the modern government e-payment use case.
• mdf commerce: mdf commerce operates government electronic tendering and reverse-auction platforms. It is a direct peer in the government online auction space, comparable to Grant Street's MuniAuction and DeedAuction.

Emerging players

• ImageTrend: ImageTrend is a vertical SaaS provider for public sector agencies (EMS, fire, health). It is comparable as a privately held, profitable vertical-government software firm of similar scale, and is relevant because Grant Street's incoming CFO Jon Sachs previously served as its CFO.

Broad incumbents

• Granicus: Granicus provides government experience platforms spanning communications, payments, and service delivery. It is a broad incumbent with overlapping payment and citizen-service capabilities to Grant Street.
• CGI Federal: CGI Federal is the U.S. government IT services arm of CGI Group, providing large-scale tax, revenue, and benefit administration systems for federal and state clients. A broad incumbent touching Grant Street's addressable market at the federal level.
• Tyler Technologies: Tyler Technologies is the largest U.S. public-sector software provider, offering tax, payments, and ERP solutions across counties, cities, and states. It is the dominant broad incumbent whose bundled offerings overlap with Grant Street's TaxSys and PaymentExpress.
• Conduent: Conduent is a large government services and technology BPO with payment processing and revenue administration offerings. It is a broad incumbent that competes in adjacent government payment and tax-administration work.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights6 records

Customer concentration

Compliance5 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles8 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 Grant Street Group