Errors and Omissions Insurance and Supplies? Yes — E&O insurance, notary bonds, stamps, and signing supplies are all deductible business expenses for independent notary signing agents, since each one is required or ordinary to run the business. Because notary work carries legal liability if a signing is ever done incorrectly, most notaries carry Errors & Omissions insurance and a state-required notary bond. Both are fully deductible, along with your notary commission fees, se
