SUMMO LLC is an accounting and tax advisory firm based in Washington, DC. The firm designs, implements, and executes strategies intended to help clients manage financial goals while maintaining compliance.

Its services include tax planning and preparation, daily accounting support, and advisory work tailored to client needs. SUMMO describes its accounting service as an option for clients that want to outsource finance department functions so they can focus on their products and service lines.

The firm supports clients through in-person and remote service formats, with a focus on accounting, CPA advisory, tax planning, and tax services.