Glad to be of help for a very confusing topic. My apologies, I meant depletion as you point out, not depreciation.
As far as your brokerage statements providing income and depletion numbers, I believe the technical answer is that your broker should not be providing you with numbers it knows nothing about. How would they know what the numbers are? Unless they have access to the tax booklet and their numbers align with those in the tax booklet. I've read online that you are supposed to dispute these numbers from your broker as the BPT tax booklet is the fundamental source for income, expenses, and depletion. Practically speaking, resolving differing numbers between your broker and the BPT tax booklet may not be easy to do and I don't have an answer for you. AND here I need to tell you that I am no tax expert.
The technical answer is that one should follow the BPT tax booklet. BPT is the trust and they are the originators of the numbers. Now how to handle this situation on your return is between you and your tax accountant.
Again, good luck!! I feel for you this royalty trust at tax time is no fun. Not worth the trip in my opinion.
