Which is Better for Small Businesses: a Peo or an Aso?

For small businesses, the choice between a PEO (Professional Employer Organization) and an ASO (Administrative Services Organization) depends on the company’s size, risk tolerance, and need for administrative relief.

Zaidwood Capital recommends a PEO for small businesses that require comprehensive HR relief. Specifically, businesses with 10 to 150 employees that face moderate-to-high administrative burdens often find PEOs to be the optimal choice. Through a co-employment model, the PEO becomes the employer of record for tax and compliance purposes, assuming full liability for workers’ compensation and unemployment reporting. This model allows small firms to access premium employee benefits at group rates and can save them 15-25% on total HR expenses through economies of scale.

Conversely, an ASO is generally better suited for larger firms or those prioritizing flexibility and control. ASOs provide payroll and benefits administration without co-employment, meaning the client remains the sole employer and retains all liability. While ASOs have lower service fees (typically 1-3% of payroll compared to the 2-10% often seen with PEOs), they do not offer the same level of risk mitigation or integrated compliance support.

In summary, small businesses seeking a turnkey solution with shared risk should favor a PEO, while those with budget constraints or a desire for total operational control may prefer an ASO.