Precision. Integrity. Results.
Trusted financial guidance for businesses and high-net-worth individuals. Croonen Dienstverlening & Associates delivers expert counsel with the discretion and rigor your financial future demands.
What We Do
Comprehensive Financial Services
From tax strategy to audit assurance, we deliver the full spectrum of accounting and advisory services your business needs.
Tax Planning & Preparation
Strategic tax planning and precise preparation for individuals, businesses, and estates.
Learn MoreBookkeeping & Accounting
Accurate, timely financial records that give you a clear picture of your business.
Learn MoreFinancial Reporting
GAAP-compliant statements and management reports.
Audit & Assurance
Independent audits and reviews that build stakeholder confidence.
Business Advisory
Strategic guidance for growth, restructuring, and succession.
Estate Planning
Preserve and transfer wealth with precision and care.
Why Choose Us
A Firm Built on Relationships, Not Transactions.
Owner-Led Engagement
APT Croonen personally oversees every client engagement. You work directly with the founder — not a junior associate.
Absolute Confidentiality
Your financial information is protected with bank-grade security and strict professional confidentiality standards.
Proactive Strategy
We don't just report the past — we help you plan for the future with forward-looking tax and financial strategies.
Multidisciplinary Expertise
Our associates bring deep specialization across tax, audit, bookkeeping, payroll, and advisory services.
Client Testimonials
APT Croonen has been our trusted advisor for over a decade. His attention to detail and proactive approach to tax planning has saved us significantly year after year.
Managing Director
Mid-Market Manufacturing Firm
The team at Croonen Dienstverlening & Associates brings a level of expertise and personal attention that larger firms simply cannot match. They treat our business like their own.
Founder & CEO
Professional Services Group
From bookkeeping to complex tax structures, they handle everything with precision and discretion. I wouldn't trust anyone else with my financial affairs.
High-Net-Worth Individual
Private Client
Our Leadership
Led by APT Croonen, Supported by Expert Associates
APT Croonen
Founder, CEO & Owner
CPA, MBA
Antonius Petrus Theodorus Croonen founded the firm with one conviction: clients deserve a strategic partner, not just a compliance service.
Catherine M. Lowe
Associate, Tax & Advisory
CPA, JD
Specializes in complex tax structures, estate planning, and high-net-worth individual services.
David A. Thornton
Associate, Audit & Assurance
CPA, CFE
Expert in financial audits, internal controls, and regulatory compliance for mid-market firms.
Ready to Elevate Your Financial Strategy?
Schedule a confidential consultation with APT Croonen today.