tax

Tax services.

add_tax(*, to_value, at_rate) cached

Add tax to a value.

Parameters:

Name	Type	Description	Default
to	Decimal	Amount to add tax to.	required
at_rate	Decimal	Rate (percentage) to add tax at. 20% should be written as Decimal("20")	required

Returns:

Name	Type	Description
Decimal	Decimal	The amount with tax added.

Source code in src/pycountant/services/tax.py

@cache
def add_tax(*, to_value: Decimal, at_rate: Decimal) -> Decimal:
    """
    Add tax to a value.

    Args:
        to (Decimal): Amount to add tax to.
        at_rate (Decimal): Rate (percentage) to add tax at.
                           20% should be written as Decimal("20")

    Returns:
        Decimal: The amount with tax added.
    """
    base_rate = Decimal("1.0")
    return to_value * (base_rate + (at_rate / Decimal("100")))

remove_tax(*, from_value, at_rate) cached

Remove tax from a value.

Parameters:

Name	Type	Description	Default
to	Decimal	Amount to remove tax from.	required
at_rate	Decimal	Rate (percentage) to remove tax at. 20% should be written as Decimal("20")	required

Returns:

Name	Type	Description
Decimal	Decimal	The amount with tax removed.

Source code in src/pycountant/services/tax.py

@cache
def remove_tax(*, from_value: Decimal, at_rate: Decimal) -> Decimal:
    """
    Remove tax from a value.

    Args:
        to (Decimal): Amount to remove tax from.
        at_rate (Decimal): Rate (percentage) to remove tax at.
                           20% should be written as Decimal("20")

    Returns:
        Decimal: The amount with tax removed.
    """
    base_rate = Decimal("1.0")
    return from_value / (base_rate + (at_rate / Decimal(100)))