paycheck_utils/
utils.rs

1//! Module containing utility constants and enums for payroll calculations.
2//! Tax related constants are based on IRS guidelines for the year 2026.
3//! Focus is given to single filer status, with future implementation plans for other filing statuses.
4
5/// 2 week pay periods
6pub const PAY_PERIOD: f32 = 2.0;
7
8/// 26 bi-weekly pay periods in a year
9pub const PAY_PERIODS_PER_YEAR: f32 = 26.0;
10
11/// standard 40 hour full-time hours per week
12pub const STANDARD_HOURS_PER_WEEK: f32 = 40.0;
13
14/// time and a half
15pub const OVERTIME_MULTIPLIER: f32 = 1.5;
16// pub const PAID_TIME_OFF_WEEKS_PER_YEAR: f32 = 3.0; // possible future integration of overtime not possible during PTO
17
18/// 2026 filing statuses
19#[derive(Debug, Clone, Copy)]
20pub enum FilingStatus {
21    Single,
22    MarriedFilingJointly,  // for future implementation
23    MarriedFilingSeparate, // for future implementation
24    HeadOfHousehold,       // for future implementation
25}
26
27/// 2026 standard deduction for single filer: $16,100 (source: irs.gov)
28pub const SINGLE_DEDUCTION: f32 = 16100.00;
29
30/// 2026 standard deduction for head of household filer: $24,150 (source: irs.gov)
31pub const HEAD_OF_HOUSEHOLD_DEDUCTION: f32 = 24150.00; // for future implementation
32
33/// 2026 standard deduction for married filing jointly filer: $32,200 (source: irs.gov)
34pub const MARRIED_FILING_JOINTLY_DEDUCTION: f32 = 32200.00; // for future implementation
35
36/// 2026 standard deduction for married filing separately filer: $16,100 (source: irs.gov)
37pub const MARRIED_FILING_SEPERATE_DEDUCTION: f32 = 16100.00; // for future implementation
38
39/// 2026 Social Security tax rate: 6.2% (source: irs.gov)
40pub const SOCIAL_SECURITY_RATE: f32 = 0.062;
41
42/// 2026 Medicare tax rate: 1.45% (source: irs.gov)
43pub const MEDICARE_RATE: f32 = 0.0145;
44
45/// 2026 tax bracket 1 rate: 10% (source: irs.gov)
46pub const TAX_BRACKET_1_RATE: f32 = 0.10; // 10%
47
48/// 2026 tax bracket 2 rate: 12% (source: irs.gov)
49pub const TAX_BRACKET_2_RATE: f32 = 0.12; // 12%
50
51/// 2026 tax bracket 3 rate: 22% (source: irs.gov)
52pub const TAX_BRACKET_3_RATE: f32 = 0.22; // 22%
53
54/// 2026 tax bracket 4 rate: 24% (source: irs.gov)
55pub const TAX_BRACKET_4_RATE: f32 = 0.24; // 24%
56
57/// 2026 tax bracket 5 rate: 32% (source: irs.gov)
58pub const TAX_BRACKET_5_RATE: f32 = 0.32; // 32%
59
60/// 2026 tax bracket 6 rate: 35% (source: irs.gov)
61pub const TAX_BRACKET_6_RATE: f32 = 0.35; // 35%
62
63/// 2026 tax bracket 7 rate: 37% (source: irs.gov)
64pub const TAX_BRACKET_7_RATE: f32 = 0.37; // 37%
65
66/// 2026 single filer tax bracket 1 upper limit threshold: $12,400 (source: irs.gov)
67pub const SINGLE_BRACKET_1_THRESHOLD: f32 = 12400.00;
68
69/// 2026 single filer tax bracket 2 upper limit threshold: $50,400 (source: irs.gov)
70pub const SINGLE_BRACKET_2_THRESHOLD: f32 = 50400.00;
71
72/// 2026 single filer tax bracket 3 upper limit threshold: $105,700 (source: irs.gov)
73pub const SINGLE_BRACKET_3_THRESHOLD: f32 = 105700.00;
74
75/// 2026 single filer tax bracket 4 upper limit threshold: $201,775 (source: irs.gov)
76pub const SINGLE_BRACKET_4_THRESHOLD: f32 = 201775.00;
77
78/// 2026 single filer tax bracket 5 upper limit threshold: $256,225 (source: irs.gov)
79pub const SINGLE_BRACKET_5_THRESHOLD: f32 = 256225.00;
80
81/// 2026 single filer tax bracket 6 upper limit threshold: $640,600 (source: irs.gov)
82pub const SINGLE_BRACKET_6_THRESHOLD: f32 = 640600.00;
83
84/// 2026 single filer tax bracket 2 base tax amount: $1,240.00 (source: irs.gov)
85pub const SINGLE_BRACKET_2_BASE_TAX: f32 = 1240.00;
86
87/// 2026 single filer tax bracket 3 base tax amount: $5,800.00 (source: irs.gov)
88pub const SINGLE_BRACKET_3_BASE_TAX: f32 = 5800.00;
89
90/// 2026 single filer tax bracket 4 base tax amount: $17,996.00 (source: irs.gov)
91pub const SINGLE_BRACKET_4_BASE_TAX: f32 = 17996.00;
92
93/// 2026 single filer tax bracket 5 base tax amount: $41,024.00 (source: irs.gov)
94pub const SINGLE_BRACKET_5_BASE_TAX: f32 = 41024.00;
95
96/// 2026 single filer tax bracket 6 base tax amount: $58,448.00 (source: irs.gov)
97pub const SINGLE_BRACKET_6_BASE_TAX: f32 = 58448.00;
98
99/// 2026 single filer tax bracket 7 base tax amount: $192,979.25 (source: irs.gov)
100pub const SINGLE_BRACKET_7_BASE_TAX: f32 = 192979.25;
101
102// FUTURE IMPLEMENTATION OF OTHER FILING STATUS TAX BRACKETS
103
104// // 2026 tax brackets thresholds for married filing jointly filers
105// pub const MARRIED_JOINTLY_BRACKET_1_THRESHOLD: f32 = 24800.00;
106// pub const MARRIED_JOINTLY_BRACKET_2_THRESHOLD: f32 = 100800.00;
107// pub const MARRIED_JOINTLY_BRACKET_3_THRESHOLD: f32 = 211400.00;
108// pub const MARRIED_JOINTLY_BRACKET_4_THRESHOLD: f32 = 403550.00;
109// pub const MARRIED_JOINTLY_BRACKET_5_THRESHOLD: f32 = 512450.00;
110// pub const MARRIED_JOINTLY_BRACKET_6_THRESHOLD: f32 = 768700.00;
111// pub const MARRIED_JOINTLY_BRACKET_7_THRESHOLD: f32 = f32::MAX;
112
113// // 2026 tax brackets thresholds for married filing separately filers
114// pub const MARRIED_SEPARATELY_BRACKET_1_THRESHOLD: f32 = 12400.00;
115// pub const MARRIED_SEPARATELY_BRACKET_2_THRESHOLD: f32 = 50400.00;
116// pub const MARRIED_SEPARATELY_BRACKET_3_THRESHOLD: f32 = 105700.00;
117// pub const MARRIED_SEPARATELY_BRACKET_4_THRESHOLD: f32 = 201775.00;
118// pub const MARRIED_SEPARATELY_BRACKET_5_THRESHOLD: f32 = 256225.00;
119// pub const MARRIED_SEPARATELY_BRACKET_6_THRESHOLD: f32 = 384350.00;
120// pub const MARRIED_SEPARATELY_BRACKET_7_THRESHOLD: f32 = f32::MAX;
121
122// // 2026 tax brackets thresholds for head of household filers
123// pub const HEAD_OF_HOUSEHOLD_BRACKET_1_THRESHOLD: f32 = 17700.00;
124// pub const HEAD_OF_HOUSEHOLD_BRACKET_2_THRESHOLD: f32 = 67450.00;
125// pub const HEAD_OF_HOUSEHOLD_BRACKET_3_THRESHOLD: f32 = 105700.00;
126// pub const HEAD_OF_HOUSEHOLD_BRACKET_4_THRESHOLD: f32 = 201750.00;
127// pub const HEAD_OF_HOUSEHOLD_BRACKET_5_THRESHOLD: f32 = 256200.00;
128// pub const HEAD_OF_HOUSEHOLD_BRACKET_6_THRESHOLD: f32 = 640600.00;
129// pub const HEAD_OF_HOUSEHOLD_BRACKET_7_THRESHOLD: f32 = f32::MAX;
paycheck_utils/utils.rs

paycheck_utils/
utils.rs
