A man will face court after allegedly fraudulently claiming more than $47k worth of Covid-19 grants by using stolen identities.

The man, 31, was arrested at Silverwater Jail on Monday charged with more than 118 charges including 70 counts of possessing identify information to commit an indictable offence.

Police will allege the man applied for a total of $47,000 in grants in September 2021 using his own name and details from stolen identities.

He was also charged with dishonestly obtaining financial advantage by deception, 14 counts of using false documents to obtain financial advantage and 22 counts of possessing a false document to obtain advantage.

The man was refused bail and will appear at Blacktown Local Court on Tuesday.