How can you put a bathroom in a basement if the septic tank is higher than the basement?

There are a few options of doing this. You can use a "Sani-plus" toilet which is a back outlet toilet that has an ejector pump in it. it is also equipped with 2 other waste connections on either side of the tank. This allows you to plumb in a lav. sink and a bathtub. You can also install a lift station wich is an air tight 50 gallon container with a submersible pump inside that pumps the water and waste up to the level above.