You'd need to write a script yourself for this. The general ledger generally doesn't include enough information about all of your assets, expected end of useful

You'd need to write a script yourself for this. The general ledger generally doesn't include enough information about all of your assets, expected end of useful life, serials, etc. It's pretty common for accounting software packages to track this stuff and calculate depreciation, but like you're guessing its a separate process. I was an accountant in a former life, and this is a question that most companies end up solving with their accounting software. Last time I looked into ledger or hledger it didn't include this stuff (or I didn't notice that it did).