Gwinnett's Board of Commissioners voted Tuesday to lower the county's millage rate, which is used to calculate property taxes.

The commission voted unanimously to adopt the “rollback” general fund millage rate of 7.209 mills. Combined with separate rates for police, fire and other services -- all of which remained the same as 2017 -- the county’s overall millage rate will be 13.319 mills.

Last year’s overall millage rate was 13.51 mills.

One mill equals $1 in property taxes for every $1,000 of assessed value.

That county government’s millage rate does not include the additional rate imposed by the county’s Board of Education. That rate is 21.75 mills.

Officials said last month that the county's projected 2018 tax digest had jumped to around $30.8 billion in 2018, an increase of approximately $1.6 billion over 2017. The Board of Commissioners later announced their intention to adopt the rollback millage rate, which involves lowering the rate to a level where the same amount of tax revenue is collected despite the increased digest.

Property tax bills are scheduled to be mailed out to home and business owners by Aug. 15. They will be due by Oct. 15.

In other Gwinnett news: 

Police said they found a 63-year-old woman dead in the basement apartment of a home.