The National Capital Authority announced new fees for parking in Parkes, Barton, Acton, Constitution Avenue and the Russell precinct on Wednesday, with operating hours from 8.30am to 5pm Monday to Friday, and public holidays excluded.

Public servants and other workers will pay $12 per day and $2.50 per hour, as part of plans first introduced in the 2013-14 federal budget. The daily rate is lower than the $14 fee paid by some workers in the city.

Five-day tickets will be available for purchase from the ticket machines at a cost of $57.50. The tickets will be valid for five consecutive days from the day of purchase, excluding weekends and public holidays.

The National Capital Authority will investigate processes to offer medium to long-term prepaid tickets in the future.

Authority chief executive Malcolm Snow said the pay-parking scheme would increase the number of spaces available to visitors to national institutions, including the National Gallery, National Portrait Gallery, Old Parliament House, the National Museum and Questacon.

Visitors to Regatta Point and public servants from Defence, Treasury, Finance and Prime Minister and Cabinet will all be affected by the changes.

Other areas included in the arrangements include the Acton Peninsula, Anzac West carpark, Federation Mall, Reg Saunders Way, Rond Terrace between Barrine Drive and Commonwealth Avenue and the York Park Windsor Walk carpark.

About 9000 car-parking spaces will be included in the new arrangements, which the authority said would be consistent with other areas of Canberra.

Already 190 solar-powered ticket machines have been installed and some on-street parking arrangements have been changed to one-hour time-limited spaces. The machines will accept payment by Mastercard and Visa, while about 60, including one in each parking area, will accept payment by coins.

Tickets will be transferable across the Parliamentary Triangle, meaning motorists can move their vehicles during the working day.

Volunteers at national institutions will be able to park for free during their shifts and a limited number of on-street car parks will remain free for up to one hour.

Parking adjacent to the National Library of Australia will be temporarily changed to three-hour parking to free up space for visitors and the area will become short stay when pay parking starts.

Mr Snow said all revenue collected from the parking meters would be directed to the Commonwealth's consolidated revenue fund. ''The new parking arrangements will mean everyone will spend more time enjoying the central parts of Canberra, and less time circling car parks,'' he said in a statement.

Pay parking was to start from July 1, but implementation delays announced in May saw the commencement pushed back by three months.

''The rates will allow for the necessary upgrades and maintenance of car-parking infrastructure, which were left unfunded by the 2013 budget measure,'' Mr Snow said. ''The fees also reflect general market prices and take into account the recent increases announced at car parks managed by the ACT government.''

Mr Snow said a public information campaign about the pay parking arrangements would get underway from next month.

Analysis by The Canberra Times this year found that public servants would need to receive pay increases of $4000 a year to cover their outlay for pay parking in the triangle.

New ACTION bus services will start inside the triangle from September 1, designed to help public servants and visitors avoid the pay-parking areas.