Yes it is possible in Chargebee. If for example, you currently have a plan price of $10 and a tax rate of 10%, the total would come upto $11($1 for tax). In the case of inclusive tax, when a shift takes place, the plan price would remain $10 as the tax rate is not automatically added by Chargebee. You will have to change your plan prices to include taxes if you want to shift to inclusive tax. If these changes affect your current pricing model, we suggest that you use the bulk operations feature and create new plans with pricing changes to support inclusive taxes.