A former politician charged in Nova Scotia's spending scandal is denying testimony that he offered a financial incentive to an employee to buy his car.

Russell MacKinnon testified in his defence today, saying he did not offer a $3,000 bonus to Nicole Campbell in October 2005 to buy his car, a mid-1990s Dodge Intrepid.

Campbell, who did secretarial work for MacKinnon from January 2005 until June 2006, testified earlier this week that he had.

MacKinnon said he instead wanted to top up her salary because she was earning less than other staffers who worked for other legislature members.

He said there was no deal made whereby he would give her a bonus if she agreed to buy his car.

MacKinnon, a former Liberal cabinet minister, has pleaded not guilty to fraud, breach of trust and uttering forged documents.