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https://github.com/worthmine/business-tax-withholding-jp

Business::Tax::Withholding::JP 日本の消費税と源泉徴収のややこしい計算を自動化します。
https://github.com/worthmine/business-tax-withholding-jp

calculations perl5 taxes withholding

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Business::Tax::Withholding::JP 日本の消費税と源泉徴収のややこしい計算を自動化します。

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[![Build Status](https://travis-ci.com/worthmine/Business-Tax-Withholding-JP.svg?branch=master)](https://travis-ci.com/worthmine/Business-Tax-Withholding-JP) [![MetaCPAN Release](https://badge.fury.io/pl/Business-Tax-Withholding-JP.svg)](https://metacpan.org/release/Business-Tax-Withholding-JP)

# NAME



Business::Tax::Withholding::JP - auto calculation for Japanese tax and withholding



Business::Tax::Withholding::JP - 日本の消費税と源泉徴収のややこしい計算を自動化します。



# SYNOPSIS



    use Business::Tax::Withholding::JP;

    my $calc = Business::Tax::Withholding::JP->new( price => 10000 );



    $calc->net();          # 10000

    $calc->amount();       # 1

    $calc->subtotal();     # 10000

    $calc->tax();          # 800

    $calc->full();         # 10800

    $calc->withholding();  # 1021

    $calc->total();        # 9779



    # Or you can set the date in period of special tax will expire

    $calc = Business::Tax::Withholding::JP->new( date => '2038-01-01' );

    $calc->price(10000);

    $calc->withholding();  # 1000

    $calc->total();        # 9800



    # And you may ignore the withholdings

    $calc = Business::Tax::Withholding::JP->new( no_wh => 1 );

    $calc->price(10000);   # 10000

    $calc->amount(2);      # 2

    $calc->subtotal();     # 20000

    $calc->tax();          # 1600

    $calc->withholding();  # 0

    $calc->total();        # 21600



    # After 2019/10/01, this module will calculate with 10% consumption tax

    $calc = Business::Tax::Withholding::JP->new( price => 10000 );

    $calc->net();          # 10000

    $calc->amount(2);      # 2

    $calc->subtotal();     # 20000

    $calc->tax();          # 2000

    $calc->withholding();  # 2042

    $calc->total();        # 19958



# DESCRIPTION



Business::Tax::Withholding::JP

is useful calculator for long term in Japanese Business.



You can get correctly taxes and withholdings from price in your context

without worrying about the special tax for reconstructing from the Earthquake.



the consumption tax **rate is 8% (automatically up to 10% after 2019/10/01)**



You can also ignore the withholings. It means this module can be a tax calculator



Business::Tax::Withholding::JP は日本のビジネスで長期的に使えるモジュールです。

特別復興所得税の期限を心配することなく、請求価格から正しく税金額と源泉徴収額を計算できます。

なお、源泉徴収をしない経理にも対応します。**消費税率は8%、2019年10月1日から自動的に10％** です。



## Constructor



### new( price => _Int_, amount => _Int_, date => _Date_, no\_wh => _Bool_ );



You can omit these paramators.



パラメータは指定しなくて構いません。



- price



    the price of your products will be set. defaults 0.



    税抜価格を指定してください。指定しなければ0です。



- amount



    the amount of your products will be set. defaults 1.



    数量を指定してください。指定しなければ1です。



- date



    You can set payday. the net of tax and withholding depends on this. default is today.



    支払日を指定してください。消費税額と源泉徴収額が変動します。指定しなければ今日として計算します。



- no\_wh



    If you set this flag, the all you can get is only tax and total. defaults 0 and this is read-only.



    このフラグを立てるとこのモジュールの長所を台無しにできます。初期値はもちろん0で、あとから変えることはできません。



## Methods and subroutine



- price



    You can reset the price.



    price に値を代入可能です。



- amount



    You can reset the amount.



    amount に値を代入可能です。



- date



    You can reset the payday like 'YYYY-MM-DD'



    date にも値を代入可能です。フォーマットは'YYYY-MM-DD'（-区切り）です。



- net



    You can get the net of your pay. it's equal to the price.

    So it's the alias of price().



    net は price と同じ働きをします。



- subtotal



    it returns price() \* amount()



    subtotal は値と数量の積（小計）を返します。



- tax



    You can get the net of your tax.



    税額のみを取得したい場合はこちらを



- full



    You can get the net of your pay including tax.



    税込金額を知りたい場合はこちらを



- withholding



    You can get the net of your withholding from your pay.



    源泉徴収額を知りたい場合はこちらを



- total



    You can get the total of your pay including tax without withholding



    源泉徴収額を差し引いた税込支払額を知りたい場合はこちらをお使いください。



# LICENSE



Copyright (C) Yuki Yoshida(worthmine).



This library is free software; you can redistribute it and/or modify

it under the same terms as Perl itself.



# AUTHOR



Yuki Yoshida