Beancount plugin for fixed assets depreciation
Project description
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
pip install auto-depreciation
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
```
plugin "auto_depreciation.depreciation"
2020-03-01 commodity CARS
name: "cars"
assets-class: "fixed assets"
2020-03-31 * ""
Assets:Cash -100000.00 CNY
Assets:Wealth:Fixed-Assets 1 CARS {100000.00 CNY, "BMW"}
useful_life: "10y"
residual_value: 1000
```
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.
!!! 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 {380 CNY, 2020-04-30, "Nikon"}
Expenses:Property-Expenses:Depreciation 220 CNY
2020-05-31 * "Example-auto_depreciation:Nikon"
Assets:Wealth:Fixed-Assets -1 LENS {380 CNY, 2020-04-30, "Nikon"}
Assets:Wealth:Fixed-Assets 1 LENS {243 CNY, 2020-05-31, "Nikon"}
Expenses:Property-Expenses:Depreciation 137 CNY
2020-06-30 * "Example-auto_depreciation:Nikon"
Assets:Wealth:Fixed-Assets -1 LENS {243 CNY, 2020-05-31, "Nikon"}
Assets:Wealth:Fixed-Assets 1 LENS {200 CNY, 2020-06-30, "Nikon"}
Expenses:Property-Expenses:Depreciation 43 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 {380 CNY, 2020-04-30, "Nikon"}
Expenses:Property-Expenses:Depreciation 440 CNY
...
```
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