Even if you are self-employed, you are still subjected to tax auditing. There are simple ways on how to avoid tax audit that you should know and that is be honest and accurate. Self-employed people receive a portion or all of their money in cash profits is a target for tax audits as well. Keeping all the records of income either on a log book or computer program is a good move to avoid tax audits.
Remember to report all income to the Internal Revenue Service and if your income is not currently taxed be sure to pay estimated taxes. You can always ask the assistance of an auditing firm to help on your tax returns; they will be the ones to process this in your behalf.