Thanks to anew state law, Washingtonians with valid medical marijuana cards will now enjoy a reduction in tax on their cannabis, The Seattle Times reports. Washington State’s 37% tax rate for recreational cannabis ranks among the highest in the nation. For instance, neighboring Oregon’s is just 17%. The new law aims to alleviate the financial burden on medical cannabis users, making an exception on state retail sales tax. How to Qualify The new tax break applies exclusively to medically compliant products. To qualify, buyers must be registered patients in the Department of Health’s Medical Can…