Naomi Barrett, 53, went on a spending spree while working for Viscount Petersham at Crimonmogate, Aberdeenshire, between 2015 and 2016.
Barrett, of Branscombe, Devon, admitted the offence at Peterhead Sheriff Court.
She was ordered to carry out a community payback order with supervision and to repay the money.
Barrett had bought kitchen appliances and art works while having access to a company credit card as part of her role.
Sheriff Andrew Milligan told her: "You have pled guilty to this serious offence."
A viscount's former personal assistant who embezzled almost £23,000 has been ordered to repay the money or face going to jail.