Mattsson
7e81f661b2
* feat: add Bankgirot LB-fil support for salary payments and tax payments - Implemented `generateBgLb` for salary batch payments, producing opening, payment, and closing records. - Added tests for `generateBgLb` to ensure correct record generation and validation. - Created `generateBankgiroPaymentBgLb` for single tax payments to Skatteverket, including validation and formatting. - Added tests for `generateBankgiroPaymentBgLb` to verify record structure and data integrity. - Introduced `generateSkattekontoOcr` for generating valid OCR references for Skattekonto payments, with tests for various input formats. - Updated database schema to track payment file formats and timestamps for salary runs and AGI declarations. - Created a new table for logging salary payslip deliveries to ensure compliance with audit requirements. * feat: add write permission check and company ID validation for payment file generation * feat: add write permission check for salary payment file generation
54 lines
1.9 KiB
TypeScript
54 lines
1.9 KiB
TypeScript
/**
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* OCR-nummer for Skatteverket Skattekonto payments.
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*
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* Companies pay tax (skatt + arbetsgivaravgifter + F-skatt + slutlig skatt etc.)
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* to Bankgiro 5050-1055 with an OCR reference. The reference identifies which
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* Skattekonto receives the credit; Skatteverket applies it to the most recent
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* declared liability.
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*
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* Format (per Skatteverket "OCR-nummer för inbetalning till skattekontot"):
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* - 10-digit organisationsnummer (AB) or 10-digit personnummer (EF)
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* stripped of dashes/spaces
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* - Followed by a single Luhn check digit
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* - Total: 11 digits
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*
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* Examples:
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* 556012-3456 → "5560123456" + check digit "6" = "55601234566"
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* 880225-1234 → "8802251234" + check digit → 11 digits
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*
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* Reference: https://www.skatteverket.se/foretag/skatterochavdrag/skattekonto/betalainochavskattekonto/sabetalardupaskattekontot.4.18e1b10334ebe8bc80004499.html
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*/
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import { luhnCheckDigit } from '@/lib/bankgiro/luhn'
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/** Bankgiro number for all payments to Skattekontot. */
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export const SKATTEKONTO_BANKGIRO = '5050-1055'
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/**
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* Generate the standard Skattekontot OCR reference for a company.
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*
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* Accepts org_number/personnummer in any common Swedish format
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* ("556012-3456", "5560123456", "19880225-1234", "198802251234").
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*
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* For 12-digit personnummer (with century prefix), the leading century digits
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* are stripped — Skatteverket's Skattekonto-OCR uses the 10-digit form.
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*/
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export function generateSkattekontoOcr(orgOrPersonnummer: string): string {
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const digits = orgOrPersonnummer.replace(/\D/g, '')
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let base: string
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if (digits.length === 10) {
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base = digits
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} else if (digits.length === 12) {
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// Strip century prefix (1900s = "19", 2000s = "20")
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base = digits.slice(2)
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} else {
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throw new Error(
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`Ogiltigt org/personnummer för Skattekonto-OCR: "${orgOrPersonnummer}" (förväntat 10 eller 12 siffror)`
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)
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}
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const checkDigit = luhnCheckDigit(base)
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return base + checkDigit.toString()
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}
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