https://github.com/moneyforward/jct

Japanese excise tax calculator
https://github.com/moneyforward/jct

japanese tax

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Japanese excise tax calculator

• Host: GitHub
• URL: https://github.com/moneyforward/jct
• Owner: moneyforward
• License: apache-2.0
• Created: 2022-02-25T03:32:06.000Z (almost 3 years ago)
• Default Branch: main
• Last Pushed: 2023-03-28T10:47:06.000Z (over 1 year ago)
• Last Synced: 2024-05-01T15:27:42.775Z (8 months ago)
• Topics: japanese, tax
• Language: Ruby
• Homepage: https://rubygems.org/gems/jct
• Size: 146 KB
• Stars: 16
• Watchers: 117
• Forks: 2
• Open Issues: 2
• Metadata Files:
  • Readme: README.md
  • License: LICENSE
  • Codeowners: .github/CODEOWNERS

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![jct](./resources/jct.png)

Japanese excise tax calculator

[![github workflow status](https://img.shields.io/github/workflow/status/moneyforward/jct/CI/main)](https://github.com/moneyforward/jct/actions) [![crates](https://img.shields.io/gem/v/jct)](https://rubygems.org/gems/jct)



## Installation

```

$ gem install jct

```

## Usage

```ruby

require 'jct'

date = Date.new(2019, 9, 30)

Jct.amount_with_tax(100, date: date) # => 108

Jct.rate(date)                       # => 1.08

# If `date` is not passed, the excise tax rate based on `Date.today` is used

if Date.today == Date.new(2019, 10, 1)

  Jct.amount_with_tax(100)                   # => 110

  Jct.rate                                   # => 1.1

  Jct.amount_with_tax(999)                   # => 1098

  Jct.amount_with_tax(999, fraction: :floor) # => 1098

  Jct.amount_with_tax(999, fraction: :ceil)  # => 1099

end

```

## Contributing

Bug reports and pull requests are welcome!

### tips

- Please separate the PR for additional features from the PR for versioning.

## Licenses

JCT is licensed under the Apache License, Version 2.0. See [LICENSE](./LICENSE) for the full license text.