The activists left Manhattan's Zuccotti Park on Wednesday. Police on scooters flanked them as they marched past the World Trade Center site toward a ferry pier.
They planned to resume their walk in New Jersey and go through Pennsylvania, Delaware and Maryland, then arrive in Washington by Nov. 23.
That's the deadline for a congressional committee to decide whether to keep President Barack Obama's extension of Bush-era tax cuts. Protesters say the cuts benefit only rich Americans.
They hope to pick up other participants along their 240-mile march and have likened the effort to long-distance walks during the civil rights era.
They say they'll overnight by camping or at volunteered accommodations.