How to File VAT Returns in Denmark Step-by-Step

Understanding VAT in Denmark and Who Must File

Value Added Tax (moms) is a core element of the Danish tax system and applies to most goods and services. If you run a business in Denmark, you must determine early whether you are required to register for VAT and subsequently file VAT returns.

Most businesses that sell goods or services subject to VAT and whose taxable turnover exceeds the registration threshold must register. Even small businesses below the threshold may choose voluntary registration, particularly if they incur significant VAT on purchases and want to deduct it. The obligation to file VAT returns arises as soon as your registration is approved by the Danish Tax Agency (Skattestyrelsen).

VAT is generally charged at the standard rate of 25% on taxable supplies, with some specific exemptions such as certain health services, education, and financial services. Knowing whether your supplies are taxable, exempt, or outside the scope is crucial before you attempt to submit any VAT return.

Step 1: Registering for VAT with Skattestyrelsen

Before you can file returns, your business must be formally registered for VAT. This process is completed through the Virk.dk portal, which serves as the digital entry point for Danish businesses.

You will typically need to provide:

- Basic company details (name, address, CVR number).

- Type of business activity and expected annual turnover.

- Expected start date for taxable activity.

After submission, Skattestyrelsen processes the registration and confirms your VAT number and reporting frequency (monthly, quarterly, or semi-annual), based on your estimated turnover and type of business. This confirmation also states from which date you are considered VAT-liable, which will define the first period for which you must file a VAT return.

Step 2: Determining Your VAT Reporting Frequency

Once registered, your VAT reporting frequency is determined by your turnover bracket. Larger businesses usually report monthly, while smaller ones may report quarterly or every six months. The frequency can change if your turnover increases or decreases, and Skattestyrelsen will notify you of any change.

You must always verify which periods apply to your company in TastSelv Erhverv. Each period has its own deadline. Missing a deadline can trigger reminders, interest, and potentially penalties, so integrating these dates into your internal calendar is essential.

Step 3: Setting Up a Robust VAT Bookkeeping System

Accurate bookkeeping is the foundation of correct VAT returns. All sales and purchases must be recorded with VAT correctly coded according to whether VAT is charged, not charged, reversed, or exempt.

Key elements of a solid VAT bookkeeping setup include:

- Separate accounts for “Output VAT” (moms af salg) and “Input VAT” (moms af køb).

- Clear distinction between domestic sales, EU B2B supplies, exports outside the EU, and exempt activities.

- Systematic reading and storage of purchase invoices to ensure they contain all mandatory details to allow VAT deduction (supplier's VAT number, date, invoice number, VAT amount, etc.).

- Documentation for special transactions such as intra-EU acquisitions, reverse charge services, or import VAT.

Using accounting software that supports Danish VAT rules simplifies coding and reporting, but you still bear responsibility for the accuracy of the data entered.

Step 4: Calculating Output VAT on Your Sales

Output VAT is the VAT you charge your customers on taxable supplies. For each VAT period, you must calculate the total VAT charged.

This involves:

- Summing up all domestic taxable sales subject to 25% VAT.

- Identifying any zero-rated exports or intra-EU supplies that may be reported differently but do not incur Danish VAT.

- Separating exempt sales that do not include VAT and may limit your right to deduct input VAT.

In most cases, you multiply the net sales figures by 25% to identify output VAT. However, if your sales include discounts, credit notes, or returns, you must ensure these are reflected in the period's output VAT total. Credit notes typically reduce the VAT you must pay for that period if they relate to earlier invoiced amounts.

Step 5: Determining Deductible Input VAT on Purchases

Input VAT is the VAT you have paid on purchases and costs that are used in your VAT-liable business. Deducting this VAT correctly is central to arriving at the net amount to be paid or refunded.

To determine deductible input VAT, you must:

- List all supplier invoices for the period that include Danish VAT and that relate to your taxable activities.

- Exclude VAT on expenses that are not deductible by law (for example, certain entertainment expenses or purely private use).

- Apply partial deduction if your business performs both taxable and exempt activities. In that case, only a portion of the VAT on shared costs may be deductible, calculated using a pro rata method based on the relative share of taxable turnover.

Careful documentation is important because Skattestyrelsen can request supporting invoices and proof that the purchases relate to business activities. Failing to keep proper documentation can lead to denial of deductions and additional assessments.

Step 6: Calculating Your Net VAT Payable or Refundable

Once you have determined both output VAT and deductible input VAT for the period, the next step is to calculate the net VAT.

The calculation is straightforward:

Net VAT = Output VAT – Input VAT

If output VAT exceeds input VAT, you owe the difference to Skattestyrelsen. If input VAT is higher than output VAT, you are entitled to a refund. This net figure is what you will declare in your VAT return in TastSelv Erhverv.

Ensure that the figures you use match those in your accounting system. A good practice is to reconcile your VAT accounts before submission, checking that the balance of your output and input VAT ledger accounts matches the totals you intend to report.

Step 7: Logging In to TastSelv Erhverv

Danish VAT returns are filed digitally through TastSelv Erhverv, Skattestyrelsen's self-service portal for businesses. To access it, you generally need:

- NemID or MitID for business (depending on current authentication solutions).

- Proper authorization if you are an employee, accountant, or adviser acting on behalf of the company.

After logging in, navigate to the VAT (moms) section, where you will see an overview of your open and previous periods. Select the VAT period you are about to file and enter the return form.

Step 8: Completing the VAT Return Form

The VAT return form in TastSelv Erhverv is structured in fields corresponding to different types of sales and purchases. While the layout can evolve over time, the general logic remains:

- Total sales subject to VAT within Denmark.

- VAT-free exports or intra-EU supplies.

- Goods and services acquired from abroad under the reverse charge mechanism, where you both calculate output VAT and deduct input VAT simultaneously if eligible.

- Total deductible input VAT for the period.

You must enter amounts in Danish kroner (DKK). If you have invoices in foreign currencies, you must convert them using appropriate exchange rates applicable at the time of supply or as otherwise accepted by Skattestyrelsen.

Review each field carefully. Common errors include mixing net and gross amounts, misclassifying exempt sales, or forgetting reverse-charge transactions. The form usually calculates the net VAT payable or refundable based on your entries.

Step 9: Submitting the Return and Paying VAT

After entering all relevant data, perform a final review. Verify that the calculated net VAT figure matches your own calculation from your accounting records. Once satisfied, confirm and submit the return electronically.

If the result is a payment, you must transfer the amount to Skattestyrelsen by the deadline for that period. Payment information, such as OCR number and bank details, is provided in TastSelv Erhverv. Many businesses use online banking templates to minimize input errors when making regular VAT payments.

If the result is a refund, Skattestyrelsen will typically pay the amount into the bank account registered for your company. Delays may occur if the tax authority decides to examine your return more closely or requests additional documentation.

Step 10: Handling Deadlines, Interest, and Penalties

Danish VAT deadlines are strict. Missing a filing or payment date can lead to:

- Reminder fees and surcharges.

- Interest on late payments.

- In serious or repeated cases, further sanctions or more intensive audits.

To avoid issues, maintain a calendar of VAT return deadlines aligned with your reporting frequency. Plan your bookkeeping so that the necessary calculations and reconciliations are complete well before each deadline. Many businesses close their VAT period a few days early internally to allow time for checking and corrections.

If you realize you will miss a deadline, it is prudent to act quickly, submit as soon as possible, and pay any outstanding amount. Voluntary prompt correction generally leads to a more favorable outcome than waiting for the authorities to react.

Step 11: Correcting Errors in Previously Filed VAT Returns

Errors can happen despite careful work. Danish rules allow you to correct past VAT returns, typically by adjusting subsequent returns or submitting explicit corrections for specific periods.

If the discovered error is minor and within certain limits, you may often correct it in the next VAT return by adjusting the relevant fields. For larger or systemic errors, a formal correction of the affected periods may be required in TastSelv Erhverv, sometimes accompanied by written explanations.

When you identify underpaid VAT, promptly correcting and paying the difference can reduce interest and limit potential penalties. If you discover that you have overpaid VAT, you can usually obtain a refund by correcting the relevant periods, provided you meet the documentation and time limit requirements.

Step 12: Record-Keeping and Documentation Requirements

Filing VAT returns is not only about submitting numbers; it also involves retaining documentation for a legally defined period. In Denmark, businesses are generally required to keep accounting records, invoices, and other relevant material for several years.

Your documentation must cover:

- Sales invoices issued, clearly showing VAT.

- Purchase invoices, including those from foreign suppliers.

- Contracts, credit notes, and agreements that may influence VAT treatment.

- Evidence of export or intra-EU dispatch where zero-rating is applied.

- Calculations for partial deduction if carrying out both taxable and exempt activities.

Digital storage is common and acceptable if it ensures integrity, accessibility, and readability throughout the storage period. When Skattestyrelsen performs a VAT audit, these records form the basis for verifying whether your filed returns are correct.

Step 13: Special Situations and Practical Considerations

Some businesses face more complex VAT scenarios, such as distance sales, e-commerce platforms, or providing digital services to foreign customers. These may involve special schemes (for example, one-stop-shop schemes within the EU), additional reporting obligations, or foreign VAT registrations.

In these situations, it is often necessary to:

- Map out all sales flows and customer locations.

- Determine where VAT is due and whether Danish VAT or foreign VAT applies.

- Ensure your systems can distinguish between different types of transactions for accurate reporting both in Denmark and abroad.

Even in more straightforward businesses, regular internal reviews of VAT treatment, coding in the accounting system, and reconciliation of VAT accounts are valuable. Internal controls significantly reduce the risk of cumulative errors that are only discovered years later.

Wrapping Up: Building a Reliable VAT Compliance Routine

Filing VAT returns in Denmark becomes manageable when you break the process into clear, repeatable steps: register correctly, set up accurate bookkeeping, calculate your output and input VAT, use TastSelv Erhverv carefully, observe deadlines, and maintain thorough documentation. Over time, these steps form a routine that can be integrated smoothly into your monthly or quarterly financial processes.

By prioritizing consistency, documentation, and timely corrections if mistakes occur, Danish businesses can handle their VAT obligations efficiently and reduce the risk of unpleasant surprises during audits. As VAT rules and digital solutions continue to evolve, staying informed and periodically reviewing your procedures ensures that your filing process remains robust and compliant.