For the 2017 tax year, the Grapevine-Colleyville ISD Board of Trustees adopted a Maintenance & Operation tax rate of $1.04 and a Debt Service tax rate of $0.3567 for Debt Service, which is a total tax rate of $1.3967.  The maintenance and operations tax rate remained the same as the 2016 tax year.  .  If you have any questions about the adopted tax rate, please contact the GCISD Tax Office at 817-251-5632.