Krysta O'Shea Hernandez

Krysta has built her career specializing in sales and use tax. Working across public and private sectors, she has supported organizations ranging from growing businesses to one of the world's largest financial institutions. Her expertise includes multistate sales and use tax compliance, audit management, tax technology, compliance strategy, and process improvement. She has built a reputation for translating complex tax issues into practical, business-focused solutions that help clients reduce risk while supporting growth.

Krysta founded The MarshLine Group as a Financial Operations Advisory practice with Sales & Use Tax at its core — and bookkeeping as the discipline that keeps every tax decision grounded. She believes businesses deserve a trusted advisor who is proactive, responsive, and invested in their success — not just someone who files returns. Whether assisting with taxability questions, audit defense, process improvements, or multistate tax challenges, she is committed to providing thoughtful guidance tailored to each client's unique business.

When she's not working with clients, Krysta enjoys spending time with her family, exploring Northeast Florida, and staying involved in the ever-changing world of state and local tax.