fiskalizimi-utils

Zero-dependency utilities for Albanian fiscalization (Law 87/2019 "On the invoice and the circulation monitoring system") and payroll: NIPT/NUIS validation, TVSH (VAT) math, fiscal invoice totals with the per-rate VAT breakdown every fiscalized invoice must report, and gross↔net salary / profit-tax math over a verified, dated rates config. Also available as an MCP server for AI agents.

Built and maintained by Square Software, a software company in Tirana that ships fiscalization integrations for POS, ERP and e-commerce systems. These are the same pure functions that power our free online tools:

• Verifikues NIPT / NUIS
• Llogaritësi i TVSH-së
• Llogaritësi i faturës / fiskalizimit

📖 Full documentation: fiskalizimi-utils.readthedocs.io

Install

npm install fiskalizimi-utils
# or straight from GitHub:
npm install github:square-al/fiskalizimi-utils

Usage

Validate a NIPT / NUIS

import { validateNipt } from 'fiskalizimi-utils'

const res = validateNipt(' m5 1418-039h ') // separators + case are normalized
res.valid       // true
res.normalized  // 'M51418039H'
res.parts       // { prefix: 'M', digits: '51418039', checkLetter: 'H' }

validateNipt('M5141803OH')
// { valid: false, issues: ['digits-not-numeric'], likelyTypo: true }  ← O vs 0

Format-level validation only (letter A–M + 8 digits + control letter). A well-formed NIPT is not necessarily registered — check existence in the official registry (QKB), e.g. https://opencorporates.al/sq/nipt/m51418039h.

TVSH (VAT) math

import { addVat, extractVat, ALBANIA_VAT, KOSOVO_VAT } from 'fiskalizimi-utils'

addVat(1000, ALBANIA_VAT.standard)   // { net: 1000, vat: 200, gross: 1200, rate: 0.2 }
extractVat(1180, KOSOVO_VAT.standard) // net 1000, vat 180 — Kosovo 18%

Fiscal invoice totals

import { invoiceTotals } from 'fiskalizimi-utils'

const t = invoiceTotals([
  { description: 'Service A', quantity: 2, unitPrice: 500, vatRate: 0.2 },
  { description: 'Book', quantity: 1, unitPrice: 800, vatRate: 0.06, discountRate: 0.1 },
])
t.subtotal  // net total
t.totalVat  // VAT total
t.vatByRate // [{ rate: 0.2, base: 1000, vat: 200 }, { rate: 0.06, base: 720, vat: 43.2 }]

vatByRate is the per-rate base/VAT table a fiscalized invoice reports.

Payroll — gross ↔ net (Albania 2026)

import { grossToNet, netToGross, profitTax, AL_2026 } from 'fiskalizimi-utils'

const b = grossToNet(100_000, AL_2026.salary)
b.empSocial     // 9500     (9.5%)
b.empHealth     // 1700     (1.7%)
b.incomeTax     // 5044     (progressive 0 / 13 / 23%)
b.net           // 83756
b.employerCost  // 116700   (gross + employer 15% + 1.7%)

netToGross(83_756, AL_2026.salary)          // ≈ 100000
profitTax(20_000_000, AL_2026.profitTax).tax // 900000  (0% to 14M, 15% above)

Every number comes from AL_2026 — a dated config verified against tatime.gov.al on 2026-06-29 — and none are hard-coded in the functions. Read AL_2026.notes for the disclosed approximation in the 50,000–60,000 ALL/month band.

MCP server

mcp/ wraps all of the above as an MCP server (al.square/fiskalizimi) so AI agents can validate a NIPT, total an invoice or compute a net salary without a network call: validate_nipt, add_vat, extract_vat, invoice_totals, net_salary, gross_salary_from_net, profit_tax, tax_rates. Claude Desktop users install the .mcpb from the latest release; any stdio client can run node mcp/dist/main.js. Details in mcp/README.md.

Python

The Python package is a faithful port with the payroll calculators added, and it carries the dated rates config the square.al calculators read:

from fiskalizimi_utils import AL_2026, gross_to_net, validate_nipt, add_vat

validate_nipt("m5141 8039h").normalized    # 'M51418039H'
add_vat(1000, 0.20).gross                  # 1200.0

b = gross_to_net(100_000, AL_2026.salary)
b.net             #  83756.0
b.employer_cost   # 116700.0

A parity test suite generates fixtures from this TypeScript source and asserts the Python implementation against them — down to the half-up rounding JavaScript does and Python does not — so the two packages cannot silently diverge. Regenerate the fixtures with npx tsx scripts/gen-parity-fixture.mjs.

Command line

$ fiskalizimi nipt M51418039H     # pip install fiskalizimi-utils
$ fiskalizimi paga 100000 --json
$ fiskalizimi tvsh 1200 --extract
$ docker run --rm squaresoftware/fiskalizimi rates

Every subcommand takes --json. nipt exits non-zero on a bad format, so it composes in shell scripts.

Open data

dataset/ publishes the same figures as a Frictionless data package under CC-BY-4.0: income-tax and profit-tax bands, contribution rates and their base window, VAT rates, the minimum wage, and the filing deadlines — one row per band, rates as decimal fractions. It is generated from the library (cd dataset && PYTHONPATH=../python/src python3 generate.py), so the data and the code cannot drift apart.

Shqip

Mjete TypeScript pa varësi për fiskalizimin shqiptar: verifikim i formatit të NIPT/NUIS, llogaritje TVSH-je (shto/hiq nga një vlerë) dhe totalet e faturës me TVSH-në e ndarë sipas normës — ashtu siç e raporton një faturë e fiskalizuar. I njëjti kod që fuqizon llogaritësit tanë falas. Për integrime fiskalizimi në sistemet tuaja, shihni square.al.

Accuracy

The AL-2026 rates config was confirmed against tatime.gov.al on 2026-06-29 and carries verified = true. Two limitations are disclosed in the config's own notes field: the personal-income-tax bracket model is a deliberate approximation of the official schedule inside the ~50,000–60,000 ALL/month transitional band, and the severance figures are orientues values from the Labor Code's general principles rather than a statutory table. See Accuracy & limitations.

Rates and rules change; confirm with the tax authority before invoicing. Nothing here is tax or legal advice.

• No network calls, no dependencies, side-effect free — safe for browser and Node.
• Tests: npm test (TypeScript) and cd python && PYTHONPATH=src python -m unittest discover -s tests -t tests (104 tests).

Releasing

See PUBLISHING.md. Tagging vX.Y.Z publishes to PyPI and JSR over OIDC with no stored tokens and attaches the MCP bundle to the GitHub release; the MCP registry entry is then refreshed with mcp-publisher publish.

License

MIT © Square Software SHPK