Arlington and Garland have a similar cost of living.
When comparing Arlington, TX and Garland, TX, the overall cost of living indices are 95 and 96 respectively (national median = 100). Rent is $136/month cheaper in Arlington, saving renters about $1,632/year.
Median household income is $1,198/year higher in Garland. Home values also differ significantly — the median in Arlington is $276,400 compared to $248,900 in Garland.
Both cities share the same state tax structure since they are in Texas.
Arlington vs Garland — common questions
Other cost of living comparisons for Arlington and Garland