One week left to buy Opal concession cards

NSW commuters have less than a week to purchase an Opal concession card as the last of the paper tickets are phased out.

Discounted tickets for seniors and pensioners or students, apprentices and job seekers will no longer be sold from ticket machines, retailers or on board buses due to the "ongoing misuse" of such tickets, Transport for NSW says.

"Concession paper ticket misuse is a major source of fare evasion, costing taxpayers $22 million a year, and we cannot let that continue when that money is needed for improving transport services for everyone," Transport for NSW spokesman Tony Braxton-Smith said on Tuesday.

Eligible customers have until August 1 to apply for the gold or concession Opal cards.

Single-trip tickets will be the only paper ticket option for those without a card.