But once the votes are counted, what can residents expect to pay in council tax?
Below are the figures for a Band D property for every council area in Wales for the current financial year of 2017/18, how much that has gone up by for the current year, and what the average property in the area actually pays.
They are grouped here by police force region - council tax includes the police precept which is added to the overall bill paid by homes.
Local government is not fully funded by council tax.
Much of the funding for councils comes in the form of grants from the Welsh Government, which in turn gets its funding from the UK government in London.
In 2017/18 a total of £4.1bn is being divided among Wales' 22 councils.
The lions share of council cash goes on schools - with social services following behind, as shown in the graph above.
Residents pay council tax based on which band their property is in, based on its worth. Band D has historically been used as the standard for comparing council tax levels between and across local authorities.
It is used to charge tax to a property that, in Wales, was worth between £91,001 to £123,000 on April 2003 values. Council tax gets lower the cheaper a property is, and higher the more expensive a property is.
Council tax figures source: Welsh Government

Afusat Saliu, 31, and Bassy, four, and Rashidat, two, from Leeds, had been due to leave on a Virgin Atlantic flight to Lagos at 22:20 BST on Thursday.
The airline's boss Sir Richard Branson received more than 1,000 tweets calling on him to intervene personally.
The Home Office would not confirm whether deportation had been delayed.
Ms Saliu and her daughters were arrested by UK Border Agency staff on Wednesday.
Anj Handa, a close friend of the family, said: "Afusat was meant to be given 72 hours' notice before she was actually deported, and the Home Office totally ignored that. Finally they have accepted that.
"She is not going to be deported tonight or tomorrow morning but that does not mean she is not going to be deported.
"She has been given an overnight reprieve but the campaign is still very much ongoing and the lawyers are still working on her judicial review.
"We are still urging people to keep up the pressure to help her stay in this country while the case is reviewed."
Ms Saliu's solicitors BP Legal have launched a judicial review in an attempt to allow her to remain in the UK.
They say officials have ignored their own guidelines by ordering her deportation before the review is heard.
Earlier, Sir Richard Branson said in a statement: "Without knowing the specifics on the case it is very difficult to comment in detail on a legal decision taken by the Home Office.
"While Virgin Atlantic cannot confirm whether any passengers are or are not flying with them due to data protection laws, they would view any case like this with the safety and welfare of all passengers their primary concern
"Regardless, if Afusat Saliu and her family are deported to Nigeria we call upon the UK and Nigerian governments to do all they can to protect the family and ensure they are not put at risk of female genital mutilation."
Sir Richard described female genital mutilation (FGM) as an "horrendous practice and a serious violation of internationally recognised human rights".
He called on the authorities to give the Saliu family all the support and protection possible.
Ms Saliu fled from Nigeria in 2011 after her stepmother threatened to subject Bassy to female genital mutilation. Ms Saliu, who is herself a victim of FGM, was heavily pregnant at the time.
She has said she fears both her daughters will be subjected to the practice and forced into marriage should they return to Nigeria.
The family converted to Christianity in the UK and worry they would be targeted by Islamist militants Boko Haram in the west African country.
It is understood the Salius were taken into custody and detained at a holding centre in Sheffield before being moved to a family immigration centre in Crawley, West Sussex.
More than 120,000 people have signed a petition calling on the Home Office reconsider the case.
A Home Office spokeswoman said it did not comment on individual cases.
Voters will go to the polls on Thursday to determine who will represent them on local councils.
[NEXT_CONCEPT]
A woman who fears her daughters will be subjected to female genital mutilation in Nigeria will not be deported for at least another day, family friends say.