Auto Depreciation Plugin¶
Auto depreciation is a beancount plugin to deal with fixed assets depreciation. In our daily life, we may buy some valuable goods like cars, phones, furniture, etc. All these transactions are preferred to be documented as transfer instead of expenses, otherwise, you cannot evaluate your daily expenses properly. This plugin can generate depreciation transactions automatically.
Installing¶
Configuration¶
The parameters passed to the plugin are:
assets
: Fixed assets account.expenses
: Depreciation expenses account.method
: Depreciation method.
Parameter default values are as follows:
plugin "auto_depreciation.depreciation" "{
'assets':'Assets:Wealth:Fixed-Assets',
'expenses':'Expenses:Property-Expenses:Depreciation',
'method':'parabola',
}"
Usage¶
Xiaoming is a young man. One day he bought a car and paid in cash. We assume that the original value of that car is 100,000 CNY and it will scrap after 10 years. The residual value is still 1,000 CNY.
He can use this plugin like this:
Example
where we use metadata attached in the posting to pass residual value and useful life to plugin.
useful_life
is the compulsory item and y
represent years while m
represent months.
residual_value
is optional and by default 0.
Note
residual_value
is rounded to 2 decimal places.
Example
2020-03-31 * "Example"
Assets:Cash -600.00 CNY
Assets:Wealth:Fixed-Assets 1 LENS {600.00 CNY, "Nikon"}
useful_life: "3m"
residual_value: 200
The code above is equal to
2020-03-31 * "Example"
Assets:Cash -600.00 CNY
Assets:Wealth:Fixed-Assets 1 LENS {600.00 CNY, 2020-03-31, "Nikon"}
useful_life: "3m"
residual_value: 200
2020-04-30 * "Example-auto_depreciation:Nikon"
Assets:Wealth:Fixed-Assets -1 LENS {600.00 CNY, 2020-03-31, "Nikon"}
Assets:Wealth:Fixed-Assets 1 LENS {379.74 CNY, 2020-04-30, "Nikon"}
Expenses:Property-Expenses:Depreciation 220.26 CNY
2020-05-31 * "Example-auto_depreciation:Nikon"
Assets:Wealth:Fixed-Assets -1 LENS {379.74 CNY, 2020-04-30, "Nikon"}
Assets:Wealth:Fixed-Assets 1 LENS {243.47 CNY, 2020-05-31, "Nikon"}
Expenses:Property-Expenses:Depreciation 136.27 CNY
2020-06-30 * "Example-auto_depreciation:Nikon"
Assets:Wealth:Fixed-Assets -1 LENS {243.47 CNY, 2020-05-31, "Nikon"}
Assets:Wealth:Fixed-Assets 1 LENS {200 CNY, 2020-06-30, "Nikon"}
Expenses:Property-Expenses:Depreciation 43.47 CNY
If the amount of fixed assets is greater than 1, all will be depreciated like this:
Example
2020-03-31 * "Example"
Assets:Cash -1200.00 CNY
Assets:Wealth:Fixed-Assets 2 LENS {600.00 CNY, 2020-03-31, "Nikon"}
useful_life: "3m"
residual_value: 200
2020-04-30 * "Example-auto_depreciation:Nikon"
Assets:Wealth:Fixed-Assets -2 LENS {600.00 CNY, 2020-03-31, "Nikon"}
Assets:Wealth:Fixed-Assets 2 LENS {379.74 CNY, 2020-04-30, "Nikon"}
Expenses:Property-Expenses:Depreciation 440.52 CNY
...