Bulgaria VAT Registration: Thresholds, Timing, and Traps (2026)

VAT is the single biggest compliance surprise for founders moving to Bulgaria. Corporate tax is a flat 10% and easy to reason about. VAT has thresholds, timing rules, and cross-border wrinkles that trip up almost every new EOOD in the first year.

This guide covers when your Bulgarian company must register for VAT, when it should register voluntarily, and the traps we see most often.

The mandatory VAT threshold

As of 2026, the mandatory VAT registration threshold in Bulgaria is BGN 166,000 (roughly EUR 85,000) of taxable turnover in any rolling 12-month period. Once you cross it, you have 7 days to file the registration application.

Turnover counts:

• Sales of goods and services from Bulgaria
• Intra-EU supplies of goods
• Most B2B services provided to non-EU clients

Turnover generally does not count:

• Dividends received
• Sales of fixed assets used in the business
• Exempt financial or insurance services

If you're close to the threshold, track turnover monthly - not annually. The rolling 12-month test catches many founders who assume the calendar year resets the clock.

Voluntary VAT registration

You can register voluntarily below the threshold. This is often the right move if:

• Your customers are EU businesses that expect a VAT number for reverse-charge invoicing
• You buy significant services from other EU suppliers (Google Ads, AWS, SaaS tools) and want to avoid Bulgarian reverse-charge VAT accumulating without offset
• You want to reclaim input VAT on Bulgarian expenses (office, equipment, professional fees)

The downside: monthly VAT returns, stricter bookkeeping, and no going back easily.

Intra-EU rules that catch people out

Even below the domestic threshold, you may need to register for VAT in Bulgaria if you:

• Buy services from another EU business worth more than BGN 20,000 per year (reverse charge)
• Sell digital services B2C into other EU countries above EUR 10,000 (OSS scheme)
• Move goods between EU countries as part of an FBA or dropshipping operation

For e-commerce specifically, see our guides on Bulgaria Company for Dropshipping and Bulgaria Company for Amazon FBA Sellers - both dig into IOSS, OSS, and warehouse VAT.

Timing: when to register in your setup year

For most consulting and SaaS founders we work with, the recommended sequence is:

1. Register the EOOD
2. Open a bank account and start invoicing
3. Register voluntarily for VAT before your first significant EU B2B invoice or your first month of heavy ad spend

Waiting until you cross the threshold usually means missing out on 3-6 months of reclaimable input VAT and forcing an awkward re-issue of early invoices.

Compliance mechanics after registration

Once registered:

• Monthly VAT returns due by the 14th of the following month
• VIES declaration for intra-EU B2B sales
• Sales and purchase ledgers must reconcile to the return
• Late filing is BGN 500-10,000 per return

Most founders outsource this to their accountant for EUR 80-200/month depending on volume. It's not optional to skip.

Common mistakes

Ignoring reverse-charge VAT on foreign services. Buying Google Ads or Notion as an unregistered EOOD still creates a Bulgarian VAT liability if you're above the BGN 20,000 EU-services threshold. Many first-year founders discover this at year-end and owe several thousand euros.

Invoicing without a VAT number when clients expect one. German, Dutch, and French B2B clients often refuse to pay invoices from an EU supplier that has no VAT number, or they withhold VAT expecting reverse charge to apply.

Assuming e-commerce is exempt. OSS registration is separate from domestic VAT and has its own EUR 10,000 threshold across all EU B2C sales combined - not per country.

What this looks like end to end

If you're modelling numbers before you set up, our Bulgaria tax calculator shows corporate tax, dividend tax, and effective rate for a given revenue and expense profile. It doesn't model VAT directly (VAT is generally pass-through), but it helps you see the wider picture.

For a full walkthrough of the setup, see Complete Guide to Bulgaria Company Formation in 2026 and Bulgaria's 10% Corporate Tax: How It Actually Works.

FAQ

When must a Bulgarian EOOD register for VAT?

When taxable turnover exceeds BGN 166,000 in any rolling 12-month period, or when specific intra-EU thresholds are crossed. Registration is due within 7 days.

Can I register for VAT before I have any revenue?

Yes. Voluntary registration is available from day one and is usually recommended if you'll invoice EU businesses or spend meaningfully on EU services.

How often are VAT returns filed in Bulgaria?

Monthly. Returns and payment are due by the 14th of the following month.

Do I need VAT if all my clients are outside the EU?

Often no for the sales side (place of supply rules mean B2B services to non-EU clients are outside Bulgarian VAT scope), but you may still need to register because of EU services you purchase.