| # | Id | Type | Description |
| 1 | finalK1 | boolean | Final K-1 |
| 2 | amendedK1 | boolean | Amended K-1 |
| 3 | fiscalYearBegin | DateString | |
| 4 | fiscalYearEnd | DateString | |
| 5 | fiduciary | TaxParty | |
| 6 | form1041T | boolean | Box D, Check if Form 1041-T was filed |
| 7 | date1041T | DateString | |
| 8 | final1041 | boolean | Box E, Check if this is the final Form 1041 for the estate or trust |
| 9 | domestic | boolean | Box H, Domestic beneficiary |
| 10 | foreign | boolean | Box H, Foreign beneficiary |
| 11 | interestIncome | number | Box 1, Interest income |
| 12 | ordinaryDividends | number | Box 2a, Ordinary dividends |
| 13 | qualifiedDividends | number | Box 2b, Qualified dividends |
| 14 | netShortTermGain | number | Box 3, Net short-term capital gain |
| 15 | netLongTermGain | number | Box 4a, Net long-term capital gain |
| 16 | gain28Rate | number | Box 4b, 28% rate gain |
| 17 | unrecaptured1250Gain | number | Box 4c, Unrecaptured section 1250 gain |
| 18 | otherPortfolioIncome | number | Box 5, Other portfolio and nonbusiness income |
| 19 | ordinaryBusinessIncome | number | Box 6, Ordinary business income |
| 20 | netRentalRealEstateIncome | number | Box 7, Net rental real estate income |
| 21 | otherRentalIncome | number | Box 8, Other rental income |
| 22 | directlyApportionedDeductions | Array of CodeAmount | Box 9, Directly apportioned deductions |
| 23 | estateTaxDeduction | number | Box 10, Estate tax deduction |
| 24 | finalYearDeductions | Array of CodeAmount | Box 11, Final year deductions |
| 25 | amtAdjustments | Array of CodeAmount | Box 12, Alternative minimum tax adjustment |
| 26 | credits | Array of CodeAmount | Box 13, Credits and credit recapture |
| 27 | otherInfo | Array of CodeAmount | Box 14, Other information |