The growth had exceeded expectations, he said.
The council voted in favour of the rates resolution for July 1, 2021, to June 30, 2022, meaning Whanganui ratepayers are facing an average rates increase of 5.7 per cent this year.
Mayor Hamish McDouall said it was a procedural meeting following the council's adoption of the 2021-2031 long-term plan on June 22.
A uniform annual general charge of $700 per SUIP has been set in accordance with the Local Government Act 2002.
A general rate of 1.30 cents in the dollar has been set for commercial properties while residential and farming general rates are varied according to size.
Manville's report itemised differential rates for roads and footpaths, roading resilience, earthquake strengthening, stormwater, water supply, wastewater, trade waste contributions and targeted rates for exotic forestry properties.
Manville said the total rates bill for the year amounted to $76m and ratepayers would receive their first bill on or around August 1.