you should look to your state's marketplace to begin the application process. if your spouse's plan costs more than 9. 5% of your family income it is considered unaffordable and you may qualify for subsidies to buy insurance on the marketplace. there are other specific rules about spouse and dependent coverage that should be answered by your state's marketplace.
what if you have health insurance through your employer but the cost of covering your spouse/dependents is too great? . will they be eligible for subsidies?