Federal Treasurer Josh Frydenberg has described the people vandalising his campaign posters with Hitler references in his Melbourne seat of Kooyong as "cowards".

Key points: Hitler moustaches have been drawn on images of Josh Frydenberg on his campaign posters

Hitler moustaches have been drawn on images of Josh Frydenberg on his campaign posters Mr Frydenberg, who is Jewish, has condemned the vandals

Mr Frydenberg, who is Jewish, has condemned the vandals The Treasurer's Jewish mother was born in Hungary and fled to Australia to escape the Holocaust

Several posters displaying photographs of Mr Frydenberg, who is Jewish, have been vandalised in the suburb of Hawthorn in Melbourne's inner east.

On one poster a Hitler moustache and what appear to be devil horns appear to have been drawn with a black marker.

Another has the words "Right Wing Facist [sic]" written across his forehead, with glasses and a toothbrush moustache.

In a statement confirming the graffiti in the suburb of Hawthorn, Mr Frydenberg condemned those responsible.

"Regardless of one's political persuasion, vandalism is unacceptable," Mr Frydenberg said.

A Hitler moustache and devil horns drawn on Josh Frydenberg's campaign poster. ( Supplied )

"It's one thing for these cowards to graffiti a sign, but it's another thing altogether to invoke the horrors of the Holocaust and the evils of Hitler and the Nazis.

"These people should be ashamed of themselves."

Mr Frydenberg's mother, Erica Strausz, was Jewish.

She was born in Hungary and escaped the Holocaust to Australia, arriving as a child via a refugee camp in 1950.

His mother's country of birth forced him into the dual citizenship saga in 2017 as questions were raised as to whether he was a Hungarian dual citizen, despite being born in Australia.

Mr Frydenberg delivered his first Budget on Tuesday, promising billions of dollars for tax cuts, major road upgrades and health care.

One of the biggest savings measures was a plan to change how welfare recipients declare their incomes, which the Government expects to add $2 billion to its coffers.