An end of financial year discount promotion has landed electronics retailer Kogan.com in the Federal Court, accused of false or misleading advertising.

Kogan.com is accused of jacking up prices on hundreds of products immediately before offering customers an online discount code for the end of the last financial year.

Kogan.com is accused of inflating prices for the period of its "TAXTIME" promotion so customers were actually paying more. Credit:ACCC

The promotion, whereby customers could obtain a 10 per cent discount on the advertised price by entering the code "TAXTIME" at checkout, ran from June 27 to 30, 2018.

But the ACCC alleged that, from June 26 to July 2, Kogan.com raised the advertised prices on 600 products. The prices were inflated to such an extent that, even with the discount code, customers were paying more than they would have before the promotion.