Re: Beancount - V3: G... - Are you considering fixing beancount'...

[Martin Blais]

I just responded on your doc.

I like the idea, I'm putting down a few more proposals to ponder.

As per your proposal, I see this:

Pros:

+ Simplified balancing rule

Cons:

- User has to compute the cost basis manually (but we could get creative around making this easier)

- Cost basis on individual lots loses the original share price, which affects the matching rule.

I'm proposing two other alternatives:

1. Automatically compute and insert a rebate on selling, based on the commissions in the augmenting transaction

2. Track original and adjusted cost bases in the postings

On Tue, Jul 14, 2020 at 9:53 PM Mark Lodato (Google Docs) <comments...@docs.google.com> wrote:

Mark Lodato replied to a comment in the following document

Beancount - V3: Goals & Design

Commissions in P/L

Mark Lodato Are you considering fixing beancount's notion of cost basis so that it includes the commission? Here's an example: 2014-02-10 * "Buy" Assets:US:Invest:Cash -5009.95 USD Expenses:Commissions 9.95 USD Assets:US:Invest:HOOL 10.00 HOOL {​500 USD} Here, beancount thinks the cost basis is 500 USD per share but in reality (according to the IRS) it is 500.995 USD per share. https://groups.google.com/g/beancount/c/B2hxF6N7y6s

Martin Blais Yes, precisely. I have a way to do this, but it's not trivial, will require a plugin, one couldn't easily replicate this by hand.

Mark Lodato I think it's worth considering fixing within beancount core. I put together an alternative proposal: https://docs.google.com/document/d/1af2ONEAePSAy_hwulwBrxEynKq9hvE9ZPx5u-f2PWi4/edit PTAL and let me know what you think. Thanks!

Mark Lodato New [Edited the previous comment for tone. The original was unintentionally confrontational. Sorry about that!]

Open

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[Mark Lodato]

Thanks, Martin! I just added another alternative around a `lot_basis_adjustment` metadata.