The proportion of council tax paid to Gwent Police will increase 3.99% for the next financial year.
It means residents in a Band D property will see an Â£8 increase on their bill.
People in a Band D property in the Dyfed Powys force area will save Â£10 a year.
Earlier this week, North Wales Police and Crime Panel agreed a 3.44% increase - or Â£7.83 extra for a Band D property - which Police and Crime Commissioner Winston Roddick said was "not unreasonable".
South Wales Police and Crime Commissioner's office is expected to reveal its proposals over the next few days.
Householders in the Dyfed Powys police area will see a 5% drop in the amount they pay for policing, as rates in the Gwent force area rise.