About Us

Relationship-first receivables management.

The Receivables Agency is a GK Portfolio Solutions LLC company. We help B2B teams turn slow-paying invoices into predictable cash flow — with professional accounts receivable management that protects customer relationships.

What makes us different

We represent your company as if we're part of your internal team. That means your customers experience consistent, respectful follow-up in your voice — not a third-party handoff.

Who we serve

Accounting firms (white label) and B2B companies nationwide and worldwide that invoice other businesses and want a reliable AR process without hiring in-house.

Our office

201 N Brand Blvd STE 200, Glendale, CA 91203
Serving clients nationwide across the USA and worldwide.

How we measure value

We track and report dollars collected and the cost of the service — so you can clearly see the impact on cash flow.

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From One Laptop To $500 Million Recovered

The Receivables Agency, formerly known as GK Portfolio Solutions, was founded in 2013 by George Kaiteris in Glendale, California. The story began not with a business plan, but with a problem George witnessed firsthand — a critical gap in receivables management that was costing businesses money and damaging relationships.

After being let go from his job, George made a decision that would change everything. He took his first unemployment check, purchased a basic laptop, and started reaching out to market research companies in the LA area that were struggling with aged invoices and unpaid accounts.

The result? Within just two months, George had secured enough clients to establish what would become one of California's most trusted receivables management firms.

George Kaiteris

Founder & Owner · 30+ years experience