Enum DepreciationMethod 

pub enum DepreciationMethod {
    StraightLine,
    DoubleDecliningBalance,
    SumOfYearsDigits,
    UnitsOfProduction,
    Macrs,
    ImmediateExpense,
    Degressiv,
    None,
}

Depreciation calculation method.

Variants

StraightLine

Straight-line depreciation

DoubleDecliningBalance

Double declining balance

SumOfYearsDigits

Sum of years’ digits

UnitsOfProduction

Units of production

Macrs

MACRS (Modified Accelerated Cost Recovery System)

ImmediateExpense

Immediate expense (low-value assets)

Degressiv

German declining balance (Degressiv): min(3× straight-line rate, 30%) on NBV, with automatic switch to straight-line when SL exceeds Degressiv. Per EStG §7(2) / Wachstumschancengesetz (Jul 2025 – Dec 2027).

None

No depreciation (land, CIP)

Implementations

impl DepreciationMethod

pub fn calculate_monthly_depreciation( &self, acquisition_cost: Decimal, salvage_value: Decimal, useful_life_months: u32, months_elapsed: u32, accumulated_depreciation: Decimal, ) -> Decimal

Calculate monthly depreciation amount.

Trait Implementations

impl Clone for DepreciationMethod

fn clone(&self) -> DepreciationMethod

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for DepreciationMethod

impl Debug for DepreciationMethod

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for DepreciationMethod

fn default() -> DepreciationMethod

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for DepreciationMethod

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for DepreciationMethod

impl Hash for DepreciationMethod

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for DepreciationMethod

fn eq(&self, other: &DepreciationMethod) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for DepreciationMethod

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for DepreciationMethod