A state appellate panel yesterday unanimously upheld the money-laundering and larceny convictions of disgraced political consultant John Haggerty — ordering that he begin serving his original sentence of at least 1 1/3 years in prison.

A surrender date has yet to be set for Haggerty.

“He is disappointed with this outcome and weighing his options,” his lawyer, Paul Shechtman, told The Post.

Haggerty was convicted in October 2011 of stealing $750,000 in campaign cash from Mayor Bloomberg.

Jurors found that Haggerty had promised Bloomberg that on Election Day 2009 that the defendant would conduct a massive ballot-security operation that never materialized.