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About Tab Service Company
Built on Trust. Driven by Expertise.
For Over 65 Years, We’ve Turned Complex Operations Into Competitive Advantages
Tab Service Company has been the trusted, behind-the-scenes partner for organizations navigating complex compliance and operational challenges since 1960.We don’t just process your data and documents, but we transform administrative burdens into streamlined systems that save money, ensure compliance, and free your team to focus on what matters most. From a single IBM tabulating machine in a Chicago loading dock to a comprehensive SOC 2-certified operation serving nationwide clients, our commitment remains unchanged: precision, security, and partnership in everything we do.
Who We Are
Tab Service Company is a family-owned business process outsourcing (BPO) provider, based out of Chicago, that has been trusted to deliver secure, precision-driven solutions across back-office operations. From high-volume data processing to document management and comprehensive tax form processing, we bring the same standards of security, precision, and personal partnership to each and every service we provide.
We serve many regulated industries including healthcare, finance, and higher education, to turn complex, compliance-heavy processes into streamlined, secure, and measurable cost savings. Whether you need support with a single critical function or multiple back-office workflows, we scale our expertise to match your exact requirements.
Our Mission & Vision
Mission
Tab Service Company is committed to delivering innovative, compliant, and client-centric outsourcing solutions that enhance operational efficiency and security for businesses across diverse sectors.
Vision
To be the most trusted and innovative partner for data and document services in the U.S., known for delivering accuracy, reliability, efficiency, and peace of mind.
Our Story
1960-1980: From Loading Dock to Computer Pioneer
The Beginning: One Machine, One Vision
In 1960, Robert Lambert Sr. stood in a Chicago loading dock watching a massive IBM 407 tabulating machine being carefully maneuvered into place. This 2,000-pound mechanical marvel, with its spinning wheels and clicking relays, would become the foundation of Tab Service Company.
At the time, businesses were drowning in manual data processing. Before spreadsheets, before desktop computers, before calculators were commonplace, tabulating data meant hours of hand-calculated figures prone to human error. Lambert saw an opportunity: provide automated data tabulation services using this revolutionary technology, allowing businesses to process information accurately and efficiently for the first time.
Racing Alongside Computing History
The 1960s were a time of extraordinary technological transition, and Lambert ensured Tab evolved with every breakthrough. As IBM introduced new capabilities, Tab acquired them:
- IBM 1401 (early 1960s): The first transistorized computer that was truly programmable and could store instructions in memory, a quantum leap from mechanical tabulation
- IBM System/360 (mid-1960s): Revolutionary modular architecture that could scale with business needs
- IBM System/370 (1970s): More powerful successor that cemented Tab as a true computer service bureau
Tab became one of Chicago’s pioneering computer service bureaus, offering mainframe timeshare services when owning a computer meant dedicating an entire climate-controlled room and a six-figure investment. Small and medium businesses could access computing power previously available only to the largest corporations.
Our history is entwined with the history of computing itself, from punch cards and magnetic tape to integrated circuits and beyond.
1980-2005: Building Expertise Across Industries
As personal computers arrived in the 1980s and 1990s, many predicted the end of service bureaus. Instead, Tab recognized a new opportunity: businesses still needed partners who could handle specialized, high-volume, compliance-critical processes.
We evolved from general data processing into specialized business process outsourcing:
Throughout this period, we maintained our founding principle: combine cutting-edge technology with meticulous human expertise. Automation handles volume and speed; experienced professionals ensure accuracy and judgment.
2005-2025: Leading Tax Compliance & Digital Transformation
The TAB1099 and TAB1098-T Platforms Launch (2005)
In 2005, we launched our TAB1099 and TAB1098-T platforms (previously called TSC1099 and TSC1098-T), recognizing that tax form processing was becoming increasingly complex while penalties for errors were rising. This cloud-based solution transformed how organizations handle 1099, 1098-T, and W-2 compliance and provided automated validation, electronic distribution, IRS e-filing, and complete audit trails.
The platform exemplifies our approach: we don’t just adapt to industry changes, we create solutions that anticipate them.
Today: Third Generation, Same Commitment
As a family-owned business moving into its third generation of leadership, we continue our founder’s vision with expanded scope. From that single tabulating machine in 1960, we’ve grown into a comprehensive BPO provider processing millions of documents annually, managing billions of data records, and serving clients from coast to coast.
But our core mission remains: provide exceptional service, absolute security, and precise execution across every critical back-office function where businesses need reliable support, whether that’s tax compliance keeping you penalty-free, document scanning eliminating file rooms, data processing freeing your staff for strategic work, or survey services delivering actionable insights.
Our Values & Philosophy
Our five core values guide everything we do:
Trust
We safeguard what matters most to our clients.
Expertise
Over 65 years of specialized knowledge drives everything we do.
Partnership
We’re not just a vendor; we’re an extension of our clients’ teams.
Excellence
Every detail matters—quality, accuracy, and timeliness are non-negotiable.
Adaptability
We innovate and evolve with technology and regulation so our clients can stay ahead.
Meet Our Team & Join Us
Tab Service Company’s greatest asset isn’t our technology or our systems. It’s our people. Our team brings decades of combined experience in compliance, technology, and client service, and they exemplify what makes Tab different.
People join Tab and stay for decades. This isn’t just a workplace, but it’s a community. That stability means:
- Institutional Knowledge: Your account manager truly understands your business because they’ve worked with you for years
- Expertise That Compounds: Our specialists have processed millions of forms, scanned billions of documents, and solved thousands of unique challenges
- Continuity You Can Count On: No constant staff turnover requiring you to re-explain your needs every year
We’re proud of the people who make Tab’s service exceptional, and we’re always looking for detail-oriented, client-focused professionals to join our team.
Our Achievements & Recognition
65+ Years of Continuous Service
serving clients since 1960
Authorized IRS e-file Provider
since 2005 with the launch of ts1099
SOC 2 Compliant
maintaining the highest standards of data security for over 11+ years
Millions of Tax Forms Processed
annually with industry-leading accuracy
Long-term Client Relationships
many partnerships lasting over several decades
Industry Specialization
deep expertise in healthcare, finance, and regulated sectors
Getting Started
Ready to Transform Your Operations?
Don’t let compliance requirements and operational inefficiencies hold your business back.
For over 65 years, organizations have trusted Tab Service Company to turn administrative challenges into competitive advantages. From that first IBM tabulating machine in 1960 to today’s cloud-based platforms and SOC 2-certified operations, one thing hasn’t changed: our commitment to your success.
Confidence in every process. Partnership in every interaction.