A Bronx councilman who has long charged that the city’s property tax system discriminates against minorities plans to introduce legislation requiring the Department of Finance to become more open with the public about how it bills residents.

Councilman Ritchie Torres told The Post his “property tax-transparency bill” being introduced at Wednesday’s meeting would require the Finance Department to publicly disclose tax rates of all assessed properties citywide and other key data related to property evaluations.

The department would be required to both post the data on its website and deliver it to the City Council by Sept. 1 of each year.

The bill also requires the city to provide extra information in property-value notices sent out annually to property owners. This would include “the method used by the [Finance] Department to determine … market value” of all properties and a link to the department’s website so owners could access additional details about the valuation and taxation of city-based properties.

“Taxes are rising — even though services appear to be getting worse – especially in certain [poorer] sections of the city. At the very least, we are owed an explanation why,” said Torres.

He is among a group of council members who’ve voiced support for a coalition including homeowners, the NAACP and other parties suing the city and state because it believes the current property tax system is racist and unfair to minorities.

The lawsuit, filed in 2017 by a group calling itself Tax Equity Now New York, contends the system is discriminatory because owners of multi-million dollar homes in many white neighborhoods where property values have skyrocketed – such as tony Park Slope where Mayor de Blasio owns two homes — pay a small fraction of the tax rate shouldered by owners of cheaper homes in predominantly black and Latino working-class neighborhoods like Jamaica, Queens.

Torres will be introducing the bill a week after Comptroller Scott Stringer released findings showing city property taxes have grown at triple the rate of New Yorkers’ incomes over the past decade, making is especially hard for residents in low-income neighborhoods to pay their bills.

For instance, homeowners of households making less than $50,000 yearly saw the portion of property taxes eating up their incomes rise from 6.6 percent in 2005 to 12.7 percent in 2016.

Earlier this year, Torres and four other council members tried to submit court papers in support of the Tax Equity Now lawsuit but were denied the opportunity by a Manhattan judge. The de Blasio administration argued that the council members could only be represented in this matter by the Law Department, but the Law Department was already deeding the city.

Marcy Miranda, a spokeswoman for Mayor de Blasio said, “we recognize that our current property tax system needs fixing,” adding “that’s why” de Blasio and Council Speaker Corey Johnson established an advisory commission “that will recommend ways to make the property tax system more simple, fair and clear – while making sure there is no reduction in revenue used to fund essential services.”

She added, “We will review the language on the new bill once it is introduced.”