DISCLOSURE: I AM NOT A TAX PROFESSIONAL, THIS ISN'T TAX ADVICE, ETC. 🙂 I ONLY OFFER THIS SINCE NOBODY ELSE HAS GIVEN ANY GOOD INFORMATION ABOUT HANDLING THIS PART OF THE K-1 INTERVEIW. THIS WILL AT LEAST GIVE YOU A GOOD SHOT OF GETTING TO THE FINISH LINE. PROS WILL CORRECT ME WHERE I'M WRONG.
That said:
In order to understand what you need to fill out, you need to understand why.
A) When you sold your share in your partnership, the partnership didn't know at what price you sold it. They only know that you sold such and such number of units on a specified date. They only know what you see in the K-1 Transaction Schedule.
B) When you sold your share in your partnership, your broker (Ameritrade, Robin Hood, etc.) didn't know what your TRUE cost basis was. And the reason for this is that in an MLP, for example, your cost-basis can go up and down over/under the cost basis info provided by your broker (what you bought the partnership for from Fidelity, Robin Hood, etc.) due to the taxes and fees and dividends paid by that partnership over time. You agreed to take on your portion of the partnership's tax burden at sale when you purchased units of the partnership. You may have bought that partnership 6 years ago, or this year. So that basis may have changed drastically with the taxes and fees and dividends that you accumulated during that time. If you held it for a month, it may not have changed much at all, or not at all. And those only ever get taxed during the year of sale, which is why MLPs etc are best as long-term dividend payers in the first place. You never agreed to take on the tax burdens of, say, T$la by comparison when buying/selling its stock.
What this section of your K-1 is doing is trying to match up your partnership's REAL basis info with your broker's REAL selling price info, since neither has the complete picture of what happened. So, in short--it's a capital gains calculator that will generate an entry on your capital gains section of the return (form 8949) that specifically stipulates that the information provided here is cap gains for investments where "basis was not reported to the IRS on a 1099-B." And it wasn't on the 1099-B, as I stated before, because your broker couldn't know what the TRUE basis was. BTW, if you imported a 1099-B from your brokerage (Fidelity, Ameritrade, RobinHood,etc.), that form will also generate entries on your form 8949. I don't believe that TT issues a warning that you'll wind up with duplicate entries if you imported your 1099-B for a K-1 that you sell. You only learn this the hard way after stressing out over this section and its consequences. When you're done with your return, specifically check Form 8949 to make sure you don't have duplicate entries (in the part where " (short/long-term transactions reported on form(s) 1099-b showing basis wasn't reported to the IRS" and "short/long-term transactions not reported to you on Form 1099-B" for the K-1 concerned.
**ONLINE EDITION FLUKE: In theory, if you only have one sale and one purchase date, then the information entered into the "SALES INFORMATION" interveiw during the K-1 entry will automatically remove the 1099-B entry when TurboTax completes your return. HOWEVER!!!!!! If you have multiple purchase/sales dates, the ONLINE version of TurboTax won't allow you to enter multiple sales/purchase dates during this section of the K-1 interview. You can utilize the lump-sum; but it won't remove each entry in the 1099-B. And so, the return that TurboTAx ONLINE Premium (or greater) creates will double report your capital gains. You'll have to actually go and delete each entry for the sale from your 1099-B import for the K-1 that you're entering. Your K-1 Sales SCHEDULE, after all, only reports the sales on one date and purchases on one date (ignoring the multiple dates on the TRANSACTION SCHEDULE). I don't believe that you need to worry about this. During the K-1 interview, just enter the total sales proceeds (sales price) for all of the sales dates, and then go delete the multiple 1099-B entries. The IRS will look for the information from the multiple 1099-B sales dates; but they should quickly find it on the 8949 entry now being created during the K-1 interview, now marked "(C) transactions not reported to you on Form 1099-B". REMEMBER: whatever you choose to do, before you file, double-check form 8949 when you're done to ensure that you don't have duplicate entries for these K-1 sales, and that you aren't missing any of them either.***
The Sales Information at this point of the K-1 TT interview should then slide into the 8949 to correct the 1099-B SALES PRICE information that the IRS already has (but with no info about basis to calculate correct cap gains), along with the necessary "(C) transactions not reported to you on form 1099-B" to show that you've adjusted the basis. This then points the IRS to the information it expects from the 1099-B.
This part of the TT interview for the K-1 is like a cap gains calculator.
1. Sale Price: This doesn't come from your K-1. Look at the 1099-B that you got from your broker (Fidelity, RobinHood, etc.). It will tell you at what TOTAL price you sold your units. You want the total proceeds for all units sold here (not the gain/loss). It cannot be below 0. The "Sale Price" SHOULD NOT be confused for information about purchasing prices or "Withdrawals" on your K-1 Sales Schedule, Box L. Your K-1 will not tell you anything about what the Sale price is.
2. Selling Expense: did your broker charge you for a transaction? With most, it's zero nowadays. I think this usually is for anyone dealing in real-estate partnerships and rentals, where there are realtor fees, etc.
3. Partnership Basis: This has nothing to do with your sales. It's strictly an evaluation of your partnership's performance during the time you held the units. Look at your K-1 Sales Schedule. Pay attention to 3 specific columns: "Purchase price," "Cumulative Adjustments to Basis," and "Cost Basis." Purchase price - Cumulative Adjustments =Cost Basis.
**You'll notice that "SALES PROCEEDS" is completely empty, for the reasons stated before (your partnership never knew this portion of the sale). You had to get that info from your 1099-B.***
In other words, The "Cost Basis" (Usually column 6) is your actual "PARTNERSHIP BASIS." If you have an adjustment in column 5 that takes you negative for your Cost Basis in column 6 (it's possible in cases of reverse-splits), then you enter "0" for the Partnership Basis. The IRS will not allow you to have a negative partnership basis, per its instructions for calculating adjusted basis. And the final review performed by Turbotax will not allow you to file if you list a negative basis here for any of your K-1s.
**You need to understand this because you'll have to adjust the "cost basis" (or delete the entry altogether) on your 1099-B now to avoid double-paying your cap gains and/or double-paying different amounts for your cap gains. This is especially true if you imported your 1099-B directly. Remember, they aren't reporting the correct "Cost Basis" anyways, since they don't know it.**
4. Ordinary Gain: Don't enter anything unless you have a box 7 (some sales schedules wont) that reports GAINS SUBJECT TO RECAPTURE AS ORDINARY GAINS. Those would normally go here (section 751 gain/loss, which should be somewhere else as well in box 20 of K-1 Part III). These will actually be subtracted from your capital gains because they get added to your basis. So if your selling price is 10 and your partnership basis is 5, and your GAINS SUBJECT TO RECAPTURE is 3, you'd wind up with 10 - (5 +3) = [after you press "Continue"] $2 cap gains. I'm assuming USO wouldn't have gains to recapture.
IF you only have PURCHASE PRICE / CUMULATIVE ADJ / COST BASIS, then you're done with the K-1 Sales Schedule info. Don't enter anything else on this screen FROM YOUR K-1(at least, if you didn't hold this long-term). Just make sure you have the right "Sale price" from the 1099-B filled out. If you enter the "SALES PRICE" and "PARTNERSHIP BASIS", then the form will do the calculation (sales price - partnership basis) for you to show what your true cap gain/loss and AMT amounts are when you proceed to the next screen.
Now your K-1 reflects the actual profitability or loss associated with the partnership. What you may find is that all of the taxes and fees associated with the partnership during your ownership actually benefited you or punished you. But this is your true gain/loss. **Your Broker Statement WILL NOT show that truth because it didn't have the correct "cost basis". And your K-1 only now shows this because you gave it the broker's sales price.**
Once you complete this section, you will now have an entry on your 8949 that shows the capital gains subject to federal taxes, which your 1099-B never had correct in the first place. If you notice, in the final form, that 8949 reports your sale twice---once for the (A) transaction where basis wasn't reported on 1099-b and once for (C) transaction not reported on 1099-b, then you have two choices. Either delete the entry from your 1099-B in the "Wages and Income" Section (where it shows your broker's stock sales imports ), or else find a way to bypass the K-1 Sales Information interview: see pages 1 & 3 of this thread for the latter method, which I've never tried but understand the utility of if you prefer the broker's info better: https://ttlc.intuit.com/community/investments-and-rental-properties/discussion/how-i-report-the-sale...
