If either organization is a registered 501(c)(3) eligible to receive charitable contributions, you could claim expenses as charitable contributions, not to include any value for your time.
If either one issues a W-2 to either of you, that spouse could deduct any "ordinary and necessary" expenses as job-related expenses for your itemized deductions on Schedule A.
If either one issues a 1099-MISC for wages to either of you, that spouse could claim expenses on a schedule C for self-employment income.
A Schedule C for self-employment can only be filed for a business where the intent is earning a taxable profit. If you are not undertaking either venture with the intent of earning a profit, you could not file a Schedule C for either one.
If one or both have a profit motive, you would file a Schedule c and the profit would be taxable income. Without a profit motive, you could file any income a hobby income and deduct expenses up to the amount of income.
Tax returns for non-profit organizations are not supported in TurboTax. Read more here:
https://www.irs.gov/charities-non-profits/frequently-asked-questions-faqs-e-file-for-charities-and-n...
