Accounting & tax glossary

Short, plain-language answers to the terms you'll meet running a business in Latvia, Bulgaria or Montenegro — and how Bilenta handles each one.

General

Double-entry accounting
A method where every transaction is recorded in two accounts — one debit, one credit — so the books always balance; it's the basis of compliant financial statements.
Peppol
A pan-European network and format (BIS Billing 3.0 / UBL 2.1) for exchanging structured electronic invoices between businesses and public bodies across the EU.
VAT
Value-added tax, a consumption tax charged at each stage of the supply chain — called ДДС in Bulgaria and PDV in Montenegro.
Reverse charge
A VAT rule where the buyer, not the seller, accounts for the VAT — common in cross-border EU business-to-business sales.
Bank reconciliation
Matching the entries in your accounting system against your bank statement so the two agree, catching anything missing or duplicated.

Bulgaria

НАП (NRA)
Bulgaria's National Revenue Agency, where VAT ledgers, returns and other filings are submitted.
ДДС
Bulgarian value-added tax (VAT), reported with purchase and sales ledgers known as дневници.
МОД
Bulgaria's minimum insurable income thresholds, set by activity and qualification group and used to calculate social-security contributions.
ЕГН
The Bulgarian personal identification number used throughout payroll and tax filings.
SAF-T
Standard Audit File for Tax — a standardised data file tax authorities can request; Bulgaria is introducing it in phases from 2026.
ЗКПО
Bulgaria's Corporate Income Tax Act, which sets tax-depreciation categories and the book-to-tax differences used in the annual CIT return.

Latvia

VID EDS
Latvia's State Revenue Service (VID) Electronic Declaration System — the portal where VAT, payroll and other returns are filed.
VSAOI
Latvia's mandatory state social-insurance contributions, deducted and paid through payroll.

Montenegro

PDV
Montenegrin value-added tax (VAT).

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