I found the calculation for Form 1116 (COPY 1) Line 3ea to be too high to be my gross income from all sources.
Using the Data Source feature, I found what it should sum and went to check each and indeed it adds up to a much lower number.
For reference, Data Source says:
Form 1116 (COPY 1) : Line 3ea
Calculated Gross income from all sources:
This is total income before deductions and is the sum of:
Form 1040, lines 1, 2b, 3b, 4b, 5b and 6b plus
Schedule 1 (Form 1040), line 1 plus
Schedule 1 (Form 1040), line 2a plus
Schedule C, line 7 (all copies) plus
All gains reported on Schedule D minus Schedule D, line 11, Subtotal Line A(Form 4797, Gain from Part I) plus
All gains reported on Form 4797 plus
Schedule E, line 3 total plus line 4 total plus
Schedule K-1 Worksheet - Estates and Trusts, Box 14 Code B : Foreign Tax Information section, line 7 (if it has a value); otherwise income reported in Part III lines 5, 6, 7 and 8 plus
Schedule K-3 - Partnerships Line B - Gross income from all sources
Schedule K-1 - Partnership Additional Information page 1, Box 11 section,Code A, line 1 (if positive) and line 3 and line 4 and Code I, line 5
Schedule K-3 - S Corporations Line B - Gross income from all sources
Schedule K-1 - S Corporation Additional Information page 1, Box 10 section, Code A, line 1 (if positive) and line 3 and line 4 and Code H, line 5
Schedule F, line 11 (all copies) plus
Form 4835, line 7 ( all copies) plus
Schedule 1 (Form 1040), line 7 plus
All positive income amounts on the Other Income Statement.
