Insights

Niche nonprofit Specialized experience with not-for-profit organizations suggests a potential cross-sell of nonprofit accounting, tax compliance, 990 filings, and governance consulting to similar organizations in the Missouri region.

Estate and succession Active emphasis on estate planning, business succession, and long-term financial planning positions the firm to offer wealth transfer strategies, family office services, and strategic exit planning to owner-managed businesses.

SMB advisory Targeted services for closely held businesses, real estate, and business sales indicate opportunities to expand advisory packages around cash flow optimization, tax planning, and transaction support for local middle-market firms.

Growth signal Revenue range and multiple service lines imply capacity for scalable engagements; prospect for bundled audits, tax, and consulting retainers to deepen client relationships and increase average revenue per client.

Tech and operations Reliance on established tech stack and commitment to training clients signals an opening for cybersecurity readiness, cloud accounting adoption, and workflow efficiency enhancements as a value-added offering.

Hayes & Slunaker, LLP. Tech Stack

Hayes & Slunaker, LLP. uses 8 technology products and services including Google Hosted Libraries, BootstrapCDN, jsDelivr, and more. Explore Hayes & Slunaker, LLP.'s tech stack below.

  • Google Hosted Libraries
    Content Delivery Network
  • BootstrapCDN
    Content Delivery Network
  • jsDelivr
    Content Delivery Network
  • Google Fonts API
    Font Scripts
  • Google Maps
    Maps
  • Debian
    Operating Systems
  • ZURB Foundation
    UI Frameworks
  • Apache
    Web Servers

Hayes & Slunaker, LLP.'s Email Address Formats

Hayes & Slunaker, LLP. uses at least 1 format(s):
Hayes & Slunaker, LLP. Email FormatsExamplePercentage
Last@mwstlcpa.comDoe@mwstlcpa.com
92%
F.Last@mwstlcpa.comJ.Doe@mwstlcpa.com
8%

Frequently Asked Questions

Where is Hayes & Slunaker, LLP.'s headquarters located?

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Hayes & Slunaker, LLP.'s main headquarters is located at 712 Hanley Industrial Court Brentwood, Missouri 63144 United States. The company has employees across 1 continents, including North America.

What is Hayes & Slunaker, LLP.'s phone number?

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You can contact Hayes & Slunaker, LLP.'s main corporate office by phone at . For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is Hayes & Slunaker, LLP.'s official website and social media links?

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Hayes & Slunaker, LLP.'s official website is mwstlcpa.com and has social profiles on LinkedIn.

How much revenue does Hayes & Slunaker, LLP. generate?

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As of June 2026, Hayes & Slunaker, LLP.'s annual revenue is estimated to be $10M - $25M.

What is Hayes & Slunaker, LLP.'s NAICS code?

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Hayes & Slunaker, LLP.'s NAICS code is 5412 - Accounting, Tax Preparation, Bookkeeping, and Payroll Services.

How many employees does Hayes & Slunaker, LLP. have currently?

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As of June 2026, Hayes & Slunaker, LLP. has approximately 12 employees across 1 continents, including North America. Key team members include Firm Administrator: J. W.Accountant: J. M.. Explore Hayes & Slunaker, LLP.'s employee directory with LeadIQ.

What industry does Hayes & Slunaker, LLP. belong to?

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Hayes & Slunaker, LLP. operates in the Accounting industry.

What technology does Hayes & Slunaker, LLP. use?

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Hayes & Slunaker, LLP.'s tech stack includes Google Hosted LibrariesBootstrapCDNjsDelivrGoogle Fonts APIGoogle MapsDebianZURB FoundationApache.

What is Hayes & Slunaker, LLP.'s email format?

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Hayes & Slunaker, LLP.'s email format typically follows the pattern of Last@mwstlcpa.com. Find more Hayes & Slunaker, LLP. email formats with LeadIQ.

When was Hayes & Slunaker, LLP. founded?

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Hayes & Slunaker, LLP. was founded in 2002.
Hayes & Slunaker, LLP. logo

Hayes & Slunaker, LLP.

AccountingMissouri, United States11-50 Employees

Hayes & Slunaker, LLP, formerly Martz & Wilson, LLP, is an accounting firm founded in 2002 and based in Saint Louis, Missouri. The firm provides a broad range of accounting and tax services, including IRS problem resolution, estates and trusts, business formation, financial planning, real estate and business sales, and business valuation, with a particular emphasis on servicing not-for-profit organizations, closely held businesses, and individuals with complex tax needs. Clients are supported by experienced partners and senior management who aim to deliver accurate, consistent financial reporting and strategic planning to address both business and personal financial requirements. The practice focuses on combining technical expertise with personalized service to help clients navigate evolving tax laws and industry regulations. Hayes & Slunaker operates from its location in Brentwood, Missouri, and serves a diverse client base within the accounting sector.

Section iconCompany Overview

Headquarters
712 Hanley Industrial Court Brentwood, Missouri 63144 United States
Phone number
NAICS Code
5412 - Accounting, Tax Preparation, Bookkeeping, and Payroll Services
Founded
2002
Employees
11-50

Section iconFunding & Financials

  • $10M - $25M

    Hayes & Slunaker, LLP.'s revenue is estimated to be in the range of $10M - $25M

Section iconFunding & Financials

  • $10M - $25M

    Hayes & Slunaker, LLP.'s revenue is estimated to be in the range of $10M - $25M

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