Value added tax (VAT)¶
VAT is an indirect tax. It is calculated by the seller when goods (work, services, property rights) are sold to the buyer.
This model allows us to calculate VAT on any purchases by specifying them as an array of prices.
The model itself is shown in the figure below.
Next, let's add an auxiliary function to the model and specify the shopping list.
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# Подключение вспомогательной функции запуска модели.
function run_model( name_model)
Path = (@__DIR__) * "/" * name_model * ".engee"
if name_model in [m.name for m in engee.get_all_models()] # Проверка условия загрузки модели в ядро
model = engee.open( name_model ) # Открыть модель
model_output = engee.run( model, verbose=true ); # Запустить модель
else
model = engee.load( Path, force=true ) # Загрузить модель
model_output = engee.run( model, verbose=true ); # Запустить модель
engee.close( name_model, force=true ); # Закрыть модель
end
sleep(5)
return model_output
end
Out[0]:
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Purchases = [100, 120, 12.55];
Let's run the model and output the calculated tax amount.
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run_model("NDS") # Запуск модели.
Sum = collect(simout["NDS/Сумма покупок"]);
NDS = collect(simout["NDS/НДС от покупок"]);
println("Сумма покупок: " * string(Sum.value))
println("НДС от покупок: " * string(NDS.value))
Conclusion¶
In this example we have demonstrated the possibilities of using Engee to realise everyday tasks.