This week's budget revealed plans to raise an unspecified sum of money by ''increasing sponsorships for venues and events''.

The decision will not affect the National Capital Authority's strict rules on roadside advertising, which ban large billboards and neon signs in most parts of the ACT.

Treasurer Andrew Barr also ruled out selling ad space on school properties, which are among the territory's largest assets.

However, the government was still deciding ''what venues and events might be suitable'', he said.

''There are several opportunities for events or venues to be sponsored. This includes, but isn't limited to, naming rights,'' he said.

''For example, it includes signage on the boundary fence and corporate hospitality at Manuka Oval.

''There could also be opportunities for the Enlighten Festival or

Stromlo Forest to contain opportunities for sponsorship - that is, of individual events within Enlighten or signage at events at Stromlo.''

The government will, however, begin charging fees or selling sponsorships for the floral displays that greet drivers on Northbourne Avenue, in Civic and on Drakeford Drive in Kambah.

The displays promote events at the request of not-for-profits or government agencies.

The government hopes to raise $20,000 in fees in 2014-15, rising to $45,000 a year later, to pay for planting and maintaining the flowers.

Mr Barr would not say how much revenue he expected from other sponsorships deals, as it was ''dependent on each individual agreement''.

''By the nature of such agreements, they are commercial in confidence.''

The budget papers say selling ads will be part of the hunt to find general savings of $15 million in the coming year, rising to $19.6 million three years later.