Gold, Silver, Jewels, Land, etc. Anything that can be put away other than in a bank who reports it all to the govt. Large garden which provides food cheaper than buying in store not only saves on food cost, but allows lower dollar income which means less income tax paid. You help me, I help you arrangements for exchange of labor is a further way to cut down on income taxes. While barter can be taxed, in reality the govt pays almost all it's attention to dollar denominated transactions since that's the easiest to track. For instance, mowing a neighbor's yard for a season if he puts the new shingles on your house is a service for both of you, but virtually untraceable and therefore nontaxable. If he paid someone to mow his yard, he'd have to pay tax sales tax on services in some states, not to mention use money that tax has already been collected on. If you pay someone to put on the shingles you have to pay the service sales tax, added cost to his wages to cover his SS and Medicare costs, etc. Direct exchange of labor/service is very saving come tax time. No money transactions take place, no taxes on your labor or his, and both receive something beneficial, tax free.