Here are additional references on royalties - I also posted in your another question - looks as you are doing a CPA exam?
Royalties from creative for-profit nonbusiness activities are reported on Schedule E.
see for reference - IRS publication 525 - http://www.irs.gov/pub/irs-pdf/p525.pdf
You generally report royalties in Part I of Schedule E (Form 1040), Supplemental Income and Loss.
However, if you hold an operating oil, gas, or mineral interest or are in business as a self-employed writer, inventor, artist, etc., report your income and expenses on Schedule C or Schedule C-EZ (Form 1040).
Advance royalties should be reported as income in the tax year received.
- see in the same publication
Part of future production sold. If you own mineral property but sell part of the future production, you generally treat the money you receive from the buyer at the time of the sale as a loan from the buyer. Do not include it in your income or take depletion based on it.
When production begins, you include all the proceeds in your income, deduct all the production expenses, and deduct depletion from that amount to arrive at your taxable income from the property.
See RIA Federal Tax Handbook - Royalties
Royalties are included by cash basis taxpayers on receipt (actual or constructive), and by accrual basis taxpayers when their rights to then are fixed.
For 501c3 exempt organizations - royalty income is excluded from taxation under IRC 512 - http://www4.law.cornell.edu/uscode/26/usc_sec_26_00000512----000-.html