[dmoy]

> whose employer uses a broker that doesn't do cost basis correctly for RSUs, I was very surprised TurboTax was able to import the supplement and adjust it correctly for me.

Approximately zero brokers do this, because RSU are still noncovered shares.

> Even without RSUs, I usually have hundreds of transactions across multiple brokers.

As a corollary, "hundreds of transactions" of covered shares collapsed into one summary line.

RSU is a pain though to enter. Technically you can enter a summary line and send in a 1099 to the IRS (last year was the first year that could be done electronically, so, fingers crossed it actually works correctly).

[plorkyeran]

Etrade has always reported the correct cost basis for my RSUs. They do report an incorrect basis plus supplement for ESPP shares though.

[dmoy]

Reported to you, of reported to the IRS? As in if you just push through without a 8949 does the IRS come after you with a CP-2000 a few years later with a letter assuming 0 cost basis? Or does the IRS already have correct numbers?