"It's a very easy way for these individuals to track expenses," says Jamie Sutherland, general manager of Xero North America. Xero says three-quarters of these self-employed workers do not use an accountant. Many do not realize they need to pay taxes, the company has found.

A report detailing Schedule C data can be downloaded to share data with individuals such as accountants.

Xero is working with H&R Block, Shopify, Stride Health, and FreshDesk, to help distribute the product to their freelance customers. It is priced at $5.99 per month, or $29.99 for the first year and is now available for download on iOS from the App Store.