grid_tariffs/
tax_reductions.rs

1use chrono::NaiveDate;
2use serde::Serialize;
3
4use crate::{Money, helpers::date};
5
6pub(crate) static SE_TAX_REDUCTIONS: &[TaxReduction] = &[TaxReduction::new(
7    "Skatteavdrag mikroproduktion",
8    Money::from_inner(60000),
9    TaxReductionAppliedBy::KwhFeedIn,
10    date(2025, 1, 1),
11    Some(date(2025, 12, 31)),
12)];
13
14#[derive(Debug, Clone, Copy, Serialize)]
15#[cfg_attr(feature = "schemars", derive(schemars::JsonSchema))]
16pub enum TaxReductionAppliedBy {
17    KwhFeedIn,
18}
19
20#[derive(Debug, Clone, Copy, Serialize)]
21#[cfg_attr(feature = "schemars", derive(schemars::JsonSchema))]
22pub struct TaxReduction {
23    description: &'static str,
24    cost: Money,
25    applied_by: TaxReductionAppliedBy,
26    from_date: NaiveDate,
27    /// Last date when this tax reduction applies
28    to_date: Option<NaiveDate>,
29}
30
31impl TaxReduction {
32    pub(crate) const fn new(
33        description: &'static str,
34        cost: Money,
35        applied_by: TaxReductionAppliedBy,
36        from_date: NaiveDate,
37        to_date: Option<NaiveDate>,
38    ) -> Self {
39        Self {
40            description,
41            cost,
42            applied_by,
43            from_date,
44            to_date,
45        }
46    }
47
48    pub(crate) fn valid_for(&self, today: NaiveDate) -> bool {
49        today >= self.from_date && self.to_date.is_none_or(|to_date| today <= to_date)
50    }
51}
grid_tariffs/tax_reductions.rs

grid_tariffs/
tax_reductions.rs
