I have defined three currencies which should all be equal to the current IRS Standard Business mileage rate[1], call them IRSB.T, IRSB.R, IRSB.F (tax-deductible, reimbursable, and "fixed" for when I borrow a vehicle from a friend or relative). I would like to "peg" IRSB.R and IRSB.F to the official rate so that I only update[2] one. What is the best practice?
1) Always update everything: 2023-01-01 price IRSB.T 0.655 USD 2023-01-01 price IRSB.R 0.655 USD 2023-01-01 price IRSB.F 0.655 USD ; 2024-01-01 price IRSB.T 0.67 USD 2024-01-01 price IRSB.R 0.67 USD 2024-01-01 price IRSB.F 0.67 USD 2) Update one and set the others equal every time 2023-01-01 price IRSB.T 0.655 USD 2023-01-01 price IRSB.R 1 IRSB.T 2023-01-01 price IRSB.F 1 IRSB.T ; 2024-01-01 price IRSB.T 0.67 USD 2024-01-01 price IRSB.R 1 IRSB.T 2024-01-01 price IRSB.F 1 IRSB.T 3) Set the "peg" initially and then only update one 2023-01-01 price IRSB.T 0.655 USD 2023-01-01 price IRSB.R 1 IRSB.T 2023-01-01 price IRSB.F 1 IRSB.T 2024-01-01 price IRSB.T 0.67 USD I assume that 3) will not work and that IRS.R and IRS.F would remain stuck at the old rate? I apologize that I don't have enough transactions yet to test this thoroughly. [1] The Beancount documentation talks about opening currencies when they were first created. To spare others the agony, the 1964 1040 instructions seem to be the first to clearly reference a standard mileage rate: there was a major tax reform in 1964, but I didn't exactly see a reference to a standard mileage rate as part of that bill. [2] It seems that rate changes are usually announced through "IRS NEWSWIRE" service; email alerts for this service can be obtained through subscribing here: https://service.govdelivery.com/service/multi_subscribe.html?code=USIRS -- You received this message because you are subscribed to the Google Groups "Beancount" group. To unsubscribe from this group and stop receiving emails from it, send an email to beancount+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/beancount/CABV0qx58Gyr6JiXnSOeBPjeORv5Ted9HLNwGKu1Br%3DOh8Db0zw%40mail.gmail.com.