| # | Id | Type | Description |
| 1 | fiscalYearBegin | DateString | |
| 2 | fiscalYearEnd | DateString | |
| 3 | finalK1 | boolean | Final K-1 |
| 4 | amendedK1 | boolean | Amended K-1 |
| 5 | irsCenter | string | Box C, IRS Center where partnership filed return |
| 6 | publiclyTraded | boolean | Box D, Check if this is a publicly traded partnership (PTP) |
| 7 | generalPartner | boolean | Box G, General partner or LLC member-manager |
| 8 | limitedPartner | boolean | Box G, Limited partner or other LLC member |
| 9 | domestic | boolean | Box H1, Domestic partner |
| 10 | foreign | boolean | Box H1, Foreign partner |
| 11 | disregardedEntity | boolean | Box H2, Check if the partner is a disregarded entity (DE), and enter the partner's TIN and Name |
| 12 | disregardedEntityTin | string | Box H2, Disregarded entity partner's TIN |
| 13 | disregardedEntityName | string | Box H2, Disregarded entity partner's Name |
| 14 | entityType | string | Box I1, What type of entity is this partner? |
| 15 | retirementPlan | boolean | Box I2, If this partner is a retirement plan (IRA/SEP/Keogh/etc.), check here |
| 16 | profitShareBegin | number (double) | Box J, Partner's share of profit - beginning |
| 17 | profitShareEnd | number (double) | Box J, Partner's share of profit - ending |
| 18 | lossShareBegin | number (double) | Box J, Partner's share of loss - beginning |
| 19 | lossShareEnd | number (double) | Box J, Partner's share of loss - ending |
| 20 | capitalShareBegin | number (double) | Box J, Partner's share of capital - beginning |
| 21 | capitalShareEnd | number (double) | Box J, Partner's share of capital - ending |
| 22 | decreaseDueToSaleOrExchange | boolean | Box J, Check if decrease is due to sale or exchange of partnership interest. Deprecated and no longer used beginning tax year 2023. Use `decreaseDueToSale` and `decreaseDueToExchange` instead |
| 23 | decreaseDueToSale | boolean | Box J, Check if decrease is due to sale of partnership interest |
| 24 | decreaseDueToExchange | boolean | Box J, Check if decrease is due to exchange of partnership interest |
| 25 | nonrecourseLiabilityShareBegin | number | Box K1, Partner's share of liabilities - beginning - nonrecourse |
| 26 | nonrecourseLiabilityShareEnd | number | Box K1, Partner's share of liabilities - ending - nonrecourse |
| 27 | qualifiedLiabilityShareBegin | number | Box K1, Partner's share of liabilities - beginning - qualified nonrecourse financing |
| 28 | qualifiedLiabilityShareEnd | number | Box K1, Partner's share of liabilities - ending - qualified nonrecourse financing |
| 29 | recourseLiabilityShareBegin | number | Box K1, Partner's share of liabilities - beginning - recourse |
| 30 | recourseLiabilityShareEnd | number | Box K1, Partner's share of liabilities - ending - recourse |
| 31 | includesLowerTierLiability | boolean | Box K2, Check this box if item K1 includes liability amounts from lower tier partnerships |
| 32 | liabilitySubjectToGuarantees | boolean | Box K3, Check if any of the above liability is subject to guarantees or other payment obligations by the partner |
| 33 | capitalAccountBegin | number | Box L, Partner's capital account analysis - Beginning capital account |
| 34 | capitalAccountContributions | number | Box L, Partner's capital account analysis - Capital contributed during the year |
| 35 | capitalAccountIncrease | number | Box L, Partner's capital account analysis - Current year net income (loss) |
| 36 | capitalAccountOther | number | Box L, Partner's capital account analysis - Other increase (decrease) |
| 37 | capitalAccountWithdrawals | number | Box L, Partner's capital account analysis - Withdrawals & distributions |
| 38 | capitalAccountEnd | number | Box L, Partner's capital account analysis - Ending capital account |
| 39 | builtInGain | boolean | Box M, Did the partner contribute property with a built-in gain or loss? - Yes |
| 40 | unrecognizedSection704Begin | number | Box N, Partner's Share of Net Unrecognized Section 704(c) Gain or (Loss) - beginning |
| 41 | unrecognizedSection704End | number | Box N, Partner's Share of Net Unrecognized Section 704(c) Gain or (Loss) - ending |
| 42 | ordinaryIncome | number | Box 1, Ordinary business income (loss) |
| 43 | netRentalRealEstateIncome | number | Box 2, Net rental real estate income (loss) |
| 44 | otherRentalIncome | number | Box 3, Other net rental income (loss) |
| 45 | guaranteedPaymentServices | number | Box 4a, Guaranteed payments for services |
| 46 | guaranteedPaymentCapital | number | Box 4b, Guaranteed payments for capital |
| 47 | guaranteedPayment | number | Box 4c, Total guaranteed payments |
| 48 | interestIncome | number | Box 5, Interest income |
| 49 | ordinaryDividends | number | Box 6a, Ordinary dividends |
| 50 | qualifiedDividends | number | Box 6b, Qualified dividends |
| 51 | dividendEquivalents | number | Box 6c, Dividend equivalents |
| 52 | royalties | number | Box 7, Royalties |
| 53 | netShortTermGain | number | Box 8, Net short-term capital gain (loss) |
| 54 | netLongTermGain | number | Box 9a, Net long-term capital gain (loss) |
| 55 | collectiblesGain | number | Box 9b, Collectibles (28%) gain (loss) |
| 56 | unrecaptured1250Gain | number | Box 9c, Unrecaptured section 1250 gain |
| 57 | net1231Gain | number | Box 10, Net section 1231 gain (loss) |
| 58 | otherIncome | Array of CodeAmount | Box 11, Other income |
| 59 | section179Deduction | number | Box 12, Section 179 deduction |
| 60 | otherDeductions | Array of CodeAmount | Box 13, Other deductions |
| 61 | selfEmployment | Array of CodeAmount | Box 14, Self-employment earnings (loss) |
| 62 | credits | Array of CodeAmount | Box 15, Credits |
| 63 | scheduleK3 | boolean | Box 16, Schedule K-3 is attached |
| 64 | amtItems | Array of CodeAmount | Box 17, Alternative minimum tax (AMT) items |
| 65 | taxExemptIncome | Array of CodeAmount | Box 18, Tax-exempt income and nondeductible expenses |
| 66 | distributions | Array of CodeAmount | Box 19, Distributions |
| 67 | otherInfo | Array of CodeAmount | Box 20, Other information |
| 68 | foreignTaxPaid | number | Box 21, Foreign taxes paid or accrued |
| 69 | multipleAtRiskActivities | boolean | Box 22, More than one activity for at-risk purposes |
| 70 | multiplePassiveActivities | boolean | Box 23, More than one activity for passive activity purposes |
| 71 | k1Supplemental | K1Supplemental | |
| 72 | k1StatementA | K1StatementA | |
| 73 | k1StatementC | K1StatementC | |