You don't have to wait until you hit EUR 51,130 in turnover. Under Article 100(1) of Bulgaria's VAT Act (ZDDS), any taxable person — EOOD, OOD, freelancer, or sole trader — can apply for voluntary VAT registration at any time, even with zero revenue.
The upside: you recover 20% on every business expense. The downside: monthly filing obligations, higher prices for end consumers, and a lock-in period before you can deregister. This guide breaks down exactly when voluntary registration saves you money, when it costs you, and how the process works in 2026.
What Voluntary Registration Means
Mandatory VAT registration kicks in when your taxable turnover exceeds EUR 51,130 in the current or previous calendar year (see our full VAT registration guide). Voluntary registration means you choose to enter the VAT system before reaching that threshold.
Once registered voluntarily, you have the exact same rights and obligations as a mandatorily registered person:
- You charge 20% VAT on all taxable supplies of goods and services
- You deduct input VAT on business purchases
- You file monthly VAT returns by the 14th of the following month
- You maintain purchase and sales ledgers in electronic format
- You issue VAT invoices with your BG VAT number (BG + your EIK)
There is no "lite" version. The NRA does not distinguish between voluntary and mandatory registrations in terms of compliance. The only difference is in deregistration rules — voluntary registrants face a minimum lock-in period before they can opt out.
The Pros: Why Register Voluntarily
1. Input VAT Recovery (20% Back on Business Purchases)
This is the main financial incentive. Every time you buy something for your business from a VAT-registered supplier, 20% of that cost is VAT. Without registration, that VAT is a dead cost. With registration, you deduct it from the VAT you owe on your sales.
| Annual business expense | Input VAT recovered | Without registration |
|---|---|---|
| EUR 10,000 | EUR 2,000 | EUR 0 (lost) |
| EUR 25,000 | EUR 5,000 | EUR 0 (lost) |
| EUR 50,000 | EUR 10,000 | EUR 0 (lost) |
| EUR 100,000 | EUR 20,000 | EUR 0 (lost) |
Example: Your EOOD leases an office for EUR 800/month (EUR 9,600/year), pays EUR 3,600/year for accounting, EUR 2,400/year for software subscriptions, and buys EUR 5,000 in equipment. Total VAT-able expenses: EUR 20,600. Input VAT recovered: EUR 4,120/year. That is real cash flow back into your business.
2. B2B Credibility
Many corporate clients, especially in the EU, prefer or require suppliers to be VAT-registered. A VAT invoice allows them to deduct the VAT you charge — making the transaction tax-neutral for them. Some procurement departments will not work with non-VAT-registered suppliers at all.
3. Easier Cross-Border EU Trade
With a Bulgarian VAT number, intra-Community supplies (B2B sales to other EU countries) are zero-rated under the reverse charge mechanism. Your client handles the VAT in their country, and you report the transaction through a VIES declaration. Without VAT registration, you cannot use the reverse charge and may face more complex compliance in each country.
4. Pre-Investment Recovery
Planning to buy a vehicle (EUR 30,000), renovate an office (EUR 15,000), or purchase equipment (EUR 10,000)? Registering before the purchase lets you deduct the input VAT immediately. On a EUR 30,000 car purchase, that is EUR 6,000 recovered (subject to the passenger vehicle restrictions — 50% deduction if used for both personal and business purposes).
The Cons: What It Costs You
1. Monthly VAT Returns — Even with Zero Activity
Once registered, you must file a VAT return, purchase ledger, and sales ledger electronically to the NRA by the 14th of every month. No exceptions. Even if you had zero revenue and zero expenses in a given month, you still file. Missing a return carries a fine of EUR 250 to EUR 5,110 per missed filing.
2. Higher Accountant Costs
Your accountant now prepares monthly VAT returns instead of a single annual tax filing. Expect your accounting costs to increase by EUR 50–150/month depending on transaction volume. For a low-activity business, this can outweigh the input VAT savings.
3. B2C Price Increase
If you sell to individual consumers (not businesses), you must now add 20% VAT to your prices. A service that cost EUR 100 now costs EUR 120. Your consumer clients cannot deduct VAT, so the price increase is real to them. In price-sensitive markets — tutoring, personal consulting, massage, beauty services — this can cost you clients.
The math that kills B2C businesses: If your annual revenue is EUR 30,000 from individual consumers and your business expenses are only EUR 5,000, you collect EUR 6,000 in output VAT but only recover EUR 1,000 in input VAT. You send EUR 5,000 to the NRA — money that effectively comes out of your clients' pockets (or your margins if you absorb the increase).
4. Lock-In Period Before Deregistration
Under Article 108(2) of the ZDDS, a voluntarily registered person cannot apply for deregistration earlier than 12 months from the beginning of the calendar year following the year of registration. In practice, this means:
- Register in March 2026 → earliest deregistration application: January 1, 2028 (21 months)
- Register in November 2026 → earliest deregistration application: January 1, 2028 (14 months)
- Register in January 2026 → earliest deregistration application: January 1, 2028 (24 months)
The earlier in the year you register, the longer you are locked in. This is not a trivial commitment — it means at least 12–24 months of monthly filings, accounting costs, and VAT compliance.
Not sure if it is worth it? We model both scenarios — registered vs. unregistered — based on your actual revenue and expenses. The answer is always in the numbers. Book a free consultation.
When Voluntary Registration Makes Sense
Five scenarios where the numbers almost always work in your favor:
1. High Business Expenses with VAT
If you spend more than EUR 15,000–20,000/year on VAT-able business expenses (office rent, equipment, professional services, software), the input VAT recovery alone (EUR 3,000–4,000+) exceeds the additional accounting costs. The higher your expense-to-revenue ratio, the stronger the case.
2. B2B Clients Who Recover VAT
If your clients are businesses (other EOODs, EU companies, corporations), the 20% VAT you charge is neutral to them — they deduct it on their own returns. Your price is effectively the same, but you gain input VAT recovery on your side. Pure upside.
3. Import-Heavy Business
If you import goods from outside the EU, you pay import VAT at customs (20% on the customs value). Without registration, this is a cost. With registration, you deduct it. An e-commerce business importing EUR 80,000 in goods annually recovers EUR 16,000 in import VAT.
4. Significant One-Time Investment
Starting an EOOD and planning EUR 40,000 in initial setup costs (vehicles, equipment, office renovation)? Register voluntarily before the purchases, recover EUR 8,000 in input VAT, then decide whether to maintain registration based on ongoing expenses.
5. EU Cross-Border Services
If you sell B2B services across the EU, a VAT number enables clean reverse-charge invoicing. No VAT number means more friction, potential withholding issues, and the perception of being an informal operator.
We Handle VAT Registration End to End
Application, threshold analysis, NRA filing, accounting setup. Included in our business packages.
Book Free Consultation →When Voluntary Registration Does NOT Make Sense
1. B2C Services with Low Expenses
If you are a tutor, personal trainer, massage therapist, freelance translator, or consultant selling primarily to individuals, adding 20% to your prices hurts competitiveness. If your annual business expenses are under EUR 5,000, the input VAT recovery (EUR 1,000) does not offset the additional accounting costs and the price disadvantage.
2. Under the EU SME Scheme
Since January 2026, Bulgaria implements the EU SME VAT scheme. If your EU-wide turnover is under EUR 100,000, you can sell VAT-exempt across all 27 member states without registering for VAT in each country. If you voluntarily register for VAT domestically, you lose the domestic SME exemption (you must charge 20% on Bulgarian sales). For small B2C businesses with cross-border EU clients, the SME scheme is often more advantageous than voluntary registration.
Important nuance: Voluntary domestic VAT registration and the cross-border SME scheme are technically separate. You can be VAT-registered in Bulgaria (charging 20% domestically) while using the cross-border SME exemption for sales to other EU countries — if your total EU-wide turnover stays under EUR 100,000. But for most small businesses, using the SME exemption domestically and cross-border (no VAT registration at all) is simpler and cheaper.
3. Very Low Revenue / Side Business
If your annual revenue is under EUR 10,000 and your expenses are minimal, the additional accounting costs (EUR 600–1,800/year for monthly VAT filing) can eat most or all of the input VAT savings. The compliance burden is not worth it.
4. Exempt Activities Only
If your business provides VAT-exempt services — insurance brokerage, certain financial services, healthcare, education — voluntary VAT registration provides no benefit. You cannot charge VAT on exempt supplies and you cannot deduct input VAT related to exempt activities.
The Registration Process
Voluntary registration follows the same procedure as mandatory registration, governed by Article 101 of the ZDDS:
- Prepare the application. Complete NRA Form VAT-1 (Application for VAT Registration). Attach: company registration certificate, identification of the manager, power of attorney if filing through a representative, and a description of your business activity. Electronic filing via NRA's portal requires a qualified electronic signature (KEP).
- Submit to the NRA. File at the competent territorial directorate of the National Revenue Agency. Electronic submission is recommended and requires a KEP (qualified electronic signature). The NRA acknowledges receipt.
- NRA verification (up to 7 days). Under Art. 101(6), the NRA verifies the grounds for registration within 7 days. They may inspect your business premises and request additional documentation.
- Registration act issued (up to 7 more days). Under Art. 101(7), after verification, the NRA issues a registration act or a reasoned refusal within 7 days. Total processing time: typically 14 days from application.
- VAT number assigned. Your VAT identification number is BG + your EIK (company identification number). Registration is effective from the date stated in the registration act. Begin charging 20% VAT on all taxable supplies from that date.
NRA can refuse voluntary registration under Art. 176 of the ZDDS if your company has a history of unfiled returns, unpaid tax obligations, or VAT abuse. If registration was previously refused or terminated on these grounds, you cannot reapply for 24 months from the date of refusal or deregistration.
Deregistration: How to Exit
After the minimum lock-in period (12 months from the beginning of the calendar year after registration), you can apply for voluntary deregistration. The process involves several obligations:
When You Can Deregister
- Voluntary deregistration: after the 12-month lock-in under Art. 108(2), if your turnover in the previous 2 calendar months or during the current month has not exceeded EUR 51,130 in the current calendar year
- Mandatory deregistration: upon dissolution, death of a sole trader, or cessation of taxable activity — regardless of the lock-in period
The Inventory VAT Obligation
This is the part most people overlook. Under Article 111 of the ZDDS, upon deregistration you must:
- Prepare an inventory protocol of all assets and inventory for which you claimed input VAT credit
- Calculate output VAT on those assets at their current taxable amount (acquisition cost minus depreciation)
- Include this VAT in your final VAT return and pay it to the budget
Example: You purchased office equipment for EUR 12,000 (recovering EUR 2,400 in input VAT). After 3 years, the depreciated value is EUR 6,000. Upon deregistration, you owe EUR 1,200 in output VAT on that equipment. If you also hold EUR 8,000 in inventory, you owe an additional EUR 1,600. Total deregistration VAT: EUR 2,800.
Plan your exit. If you know you will deregister, run down your inventory and fully depreciate assets beforehand. The lower the value of remaining assets, the less VAT you owe on deregistration. We help clients optimize the timing of deregistration to minimize this cost.
VAT groups are not available in Bulgaria. Unlike some EU countries (Netherlands, UK, Germany), Bulgaria has not implemented VAT grouping provisions. Each legal entity — even within the same corporate group — must register, file, and account for VAT separately. Related-party transactions between Bulgarian companies are subject to standard VAT rules.
Frequently Asked Questions
Can I register for VAT voluntarily even if my turnover is zero?
How long am I locked in after voluntary registration?
What is the main financial benefit of voluntary VAT registration?
Will voluntary VAT registration affect my EU SME scheme eligibility?
How often must I file VAT returns after voluntary registration?
What happens to my assets when I deregister?
Can I register voluntarily as a freelancer?
Are VAT groups available in Bulgaria?
"I'll register later when my turnover is higher." That is often the right call for B2C businesses with low expenses. But if you are planning significant purchases in the next 6 months, waiting means losing the input VAT on those purchases permanently. The VAT on a EUR 25,000 vehicle bought before registration is gone — you cannot claim it retroactively.
"My accountant said not to bother." Some accountants discourage voluntary registration because it increases their workload. The decision should be based on your expense profile and client base, not your accountant's preference. We model both scenarios with your actual numbers.
Get a Clear Answer on VAT Registration
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Disclaimer: This article provides general information about Bulgarian VAT law and does not constitute legal or tax advice. VAT obligations depend on individual business circumstances. Consult our team for advice tailored to your specific situation. Last updated: April 8, 2026.