Accrual vs Cash Basis VAT in Germany (Soll- vs Ist-Versteuerung): The Complete Comparison for Business Owners 2026

Accrual vs Cash Basis VAT in Germany: The Complete Comparison for Business Owners 2026

The timing of VAT payment is one of the most underrated business decisions that German entrepreneurs make. When you issue an invoice to a customer, do you owe VAT to the tax office immediately, or only when the customer actually pays you? This seemingly simple choice can mean the difference between thousands of euros in available cash each month and severe liquidity pressure.

This decision — between Soll-Versteuerung (accrual basis) and Ist-Versteuerung (cash basis) — isn't just about tax preference; it's about managing your business's lifeblood: cash flow. In Germany, most businesses default to Soll-Versteuerung without ever questioning whether an alternative might serve them better.

In this comprehensive guide, we'll break down both methods, show you exactly who can use which approach, and provide a clear framework to decide what's best for your business.

What is Soll-Versteuerung (Accrual Basis VAT)?

Soll-Versteuerung is the default VAT accounting method in Germany, governed by §16 of the Umsatzsteuergesetz (UStG). Under this method, VAT becomes due in the reporting period during which the underlying business performance (Leistung) occurs — meaning when you issue the invoice.

Here's the critical point: it doesn't matter whether your customer has actually paid you. The moment you deliver goods or services and issue an invoice, you owe VAT to the Finanzamt (tax office) for that reporting period.

Example: You invoice a customer on January 15 for €1,000 plus €190 VAT. The customer doesn't pay until March 20. Under Soll-Versteuerung, you still owe the €190 VAT in your January VAT return (or February, depending on your reporting period). Your bank account shows the money in March, but the tax office required it in January.

This method is the standard for most businesses because it aligns with how invoicing and accounting traditionally work. It's also required by law for any business that doesn't meet the specific criteria to use Ist-Versteuerung.

What is Ist-Versteuerung (Cash Basis VAT)?

Ist-Versteuerung, governed by §20 UStG, flips the timing on its head. Under this method, VAT only becomes due when payment is actually received from the customer (Vereinnahmung). This creates a natural cash flow buffer.

Using the same example: You invoice a customer on January 15 for €1,000 plus €190 VAT. Under Ist-Versteuerung, you don't owe the €190 VAT until March, when the payment actually arrives. This means your VAT payment aligns with when you actually have the customer's money.

For businesses with extended payment terms (common in B2B industries like construction, consulting, or manufacturing), Ist-Versteuerung can mean the difference between maintaining healthy cash reserves and constantly struggling with liquidity.

However, Ist-Versteuerung is not automatic. You must actively apply for it at your local Finanzamt, and you must meet specific eligibility criteria.

Who Can Use Ist-Versteuerung?

Not every business owner gets to choose. The tax office has strict rules about who is eligible for Ist-Versteuerung. If you don't meet the criteria, you're stuck with Soll-Versteuerung.

You are eligible for Ist-Versteuerung if ANY of these conditions apply:

• Your total revenue (Gesamtumsatz) in the previous calendar year was €800,000 or less. This threshold was increased from €600,000 by the Wachstumschancengesetz (Growth Opportunities Act) in 2024. You are a Freiberufler (self-employed professional) — doctors, lawyers, architects, consultants, and other professionals are typically eligible for Ist-Versteuerung regardless of their revenue, though this depends on your specific professional designation. You are not required to keep a Handelsbuch (business journal) under §148 AO (Abgabenordnung). This typically applies to small businesses that don't meet certain legal requirements.

If you meet any of these criteria, you can submit an application (Antrag) to your Finanzamt to begin using Ist-Versteuerung. The application is usually granted without difficulty if you're under the revenue threshold.

Important note: GmbHs, UGs, and other corporate entities can also use Ist-Versteuerung if their revenue is under €800,000. There's no restriction based on business structure — only on revenue size and legal form.

When is Soll-Versteuerung Mandatory?

You cannot use Ist-Versteuerung if:

• Your revenue exceeded €800,000 in the previous calendar year Your Finanzamt explicitly rejects your application for Ist-Versteuerung You operate in certain industries with special VAT rules, such as construction services (Bauleistungen) that involve reverse-charge mechanics You are a registered dealer in used goods or second-hand goods, where special valuation rules apply

Once you exceed the €800,000 threshold, you must switch back to Soll-Versteuerung. This transition happens automatically as of January 1 of the year following the threshold breach.

Soll vs Ist: Side-by-Side Comparison

The Cash Flow Impact: A Concrete Example

Let's look at real numbers to understand the impact. Imagine you're a consulting firm with the following characteristics:

• Annual revenue: €500,000 (net, without VAT) Quarterly invoicing: €125,000 per quarter VAT rate: 19% (so €23,750 VAT per quarter) Average customer payment delay: 45 days

Under Soll-Versteuerung, here's your VAT payment timeline:

• Q1: Invoice €125,000 on March 31 → Owe €23,750 VAT in April Q2: Invoice €125,000 on June 30 → Owe €23,750 VAT in July Q3: Invoice €125,000 on September 30 → Owe €23,750 VAT in October Q4: Invoice €125,000 on December 31 → Owe €23,750 VAT in January of next year

Your customers actually pay 45 days later (mid-May, mid-August, mid-November, mid-February). But you paid VAT long before the money arrived.

Under Ist-Versteuerung, your VAT payments align with when customers actually pay:

• Payment arrives mid-May → Owe €23,750 VAT in May Payment arrives mid-August → Owe €23,750 VAT in August Payment arrives mid-November → Owe €23,750 VAT in November Payment arrives mid-February → Owe €23,750 VAT in February

The result? You have €23,750 × 4 = €95,000 in annual VAT obligations under both methods. But under Ist-Versteuerung, each payment is delayed by 45 days. This means you permanently have approximately €30,000-€40,000 more in your bank account at any given time.

For more detailed analysis of this advantage, see Understanding the Cash Flow Benefit of Ist-Versteuerung.

Vorsteuerabzug: When Can You Deduct Input VAT?

Here's something that surprises many business owners: your ability to deduct input VAT (Vorsteuerabzug) is NOT affected by whether you use Soll or Ist-Versteuerung for output VAT.

Under §15 UStG, you can deduct input VAT the moment you receive an invoice from your supplier, regardless of when you pay them. This timing is independent of your Soll/Ist choice.

This creates an interesting asymmetry: If you use Ist-Versteuerung, you can deduct your supplier's VAT immediately when you receive their invoice, but you only owe output VAT when your customer pays you. This is a significant advantage.

Example: You use Ist-Versteuerung. Your supplier invoices you €1,000 + €190 VAT on January 15. You receive their invoice and can immediately deduct the €190. You don't pay your supplier until March 20. Meanwhile, you haven't invoiced your customer yet, so you don't owe output VAT. When you invoice your customer on February 1, you still don't owe VAT until they pay on March 20. The asymmetry is favorable to your cash flow.

Bookkeeping and Software Implications

Soll-Versteuerung is simpler from a bookkeeping perspective because VAT aligns with invoice dates. Most traditional accounting practices work this way, and it requires less reconciliation.

Ist-Versteuerung requires tracking when each payment is actually received and matching it to invoices. This additional complexity is manageable with modern accounting software.

The good news: virtually all modern German accounting software platforms handle both methods seamlessly. lexoffice, sevDesk, DATEV, and Fastbill all support Ist-Versteuerung. Once you configure your software to use Ist, the system automatically calculates VAT based on payment dates rather than invoice dates.

You'll need to ensure that your software is configured correctly to track payment dates and reconcile them against invoices. This is typically just a setting change and doesn't require different processes.

Decision Framework: Soll or Ist?

Here's a practical decision tree to determine which method is right for your business:

• Is your annual revenue over €800,000? If YES → You must use Soll-Versteuerung. No choice. Are you a Freiberufler (self-employed professional)? If YES → You can almost always use Ist-Versteuerung. You should, because of the cash flow advantage. Is your annual revenue under €800,000 and you're not a Freiberufler? If YES → You can apply for Ist-Versteuerung. You should apply, especially if your customers have extended payment terms. Do your customers typically pay within 14 days? If YES → The difference between Soll and Ist is minimal. Either method works, but Ist still provides a slight advantage. Do your customers typically pay within 30-90 days? If YES → Ist-Versteuerung is very valuable. Apply immediately if you're eligible. Do you operate in an industry with 60+ day payment terms (construction, B2B consulting)? If YES → Ist-Versteuerung should be your top priority for cash flow management.

Common Mistakes Business Owners Make

When it comes to Soll and Ist-Versteuerung, we see certain mistakes repeatedly:

• Forgetting to apply: Ist-Versteuerung is not automatic. If you don't submit an application to your Finanzamt, you remain on Soll regardless of eligibility. Many eligible business owners lose years of cash flow advantage because they never filed the application. Mixing up the methods in software: Configuring the wrong method in your accounting software can lead to incorrect VAT calculations and overpayment. Always verify your software settings match your actual tax election. Not knowing about the €800,000 threshold: Businesses that grow and cross the €800K threshold sometimes don't realize they must switch back to Soll. Keep track of your revenue and be prepared to transition. Thinking Vorsteuerabzug timing changes: Some business owners believe that switching to Ist also changes when they can deduct input VAT. It doesn't. Input VAT deduction timing is always based on invoice receipt, not payment. Not documenting payment dates properly: Under Ist-Versteuerung, accurate documentation of when payments are received is crucial. If you can't prove when a payment arrived, the tax office may challenge your VAT calculation.

Special Considerations: Bad Debt and Forderungsausfall

One of the best features of Ist-Versteuerung is how it handles bad debt. Under Soll-Versteuerung, if a customer never pays an invoice, you still owed VAT to the government. You must then file a correction (Berichtigung) under §17 UStG to recover that VAT — a process that requires documentation and can be contentious.

Under Ist-Versteuerung, this problem disappears. If a customer never pays, you never owed VAT in the first place, because you only owe VAT when payment is received. If no payment is received, no VAT is owed. This is a massive advantage in industries where bad debt is a recurring reality.

Switching Between Soll and Ist

If you're currently using Soll-Versteuerung and become eligible for Ist (by staying under €800,000 and meeting other criteria), you can apply to switch. Most Finanzamt offices approve these applications easily.

Conversely, if you exceed the €800,000 threshold, you must switch back to Soll-Versteuerung automatically on January 1 of the following year. This is not optional.

The application process is straightforward: submit a written request to your local Finanzamt specifying that you want to begin using Ist-Versteuerung under §20 UStG, and provide documentation of your previous year's revenue. In most cases, the office will confirm your eligibility and allow you to switch starting the next reporting period.

Related Articles & Further Reading

We've written extensively about Soll and Ist-Versteuerung. Here are the most relevant deep-dives:

• How to Apply for Ist-Versteuerung at Your Finanzamt — Step-by-step instructions for submitting your application Understanding the Cash Flow Benefit of Ist-Versteuerung — Detailed analysis of how Ist improves your liquidity The €800,000 Revenue Threshold Explained — What counts toward the limit and when it's calculated Switching from Soll to Ist-Versteuerung: Complete Guide — Full process and timing considerations Ist-Versteuerung for Freiberufler (Self-Employed Professionals) — Special rules for doctors, lawyers, consultants Bad Debt Correction Under §17 UStG — How to handle unpaid invoices VAT Returns: Soll vs Ist (Umsatzsteuer-Voranmeldung) — Different filing requirements Ist-Versteuerung for GmbH and UG — Corporate entity rules When Soll-Versteuerung is Mandatory — Risks and restrictions

Conclusion: Make the Right Choice for Your Business

The choice between Soll and Ist-Versteuerung is one of the most practical tax decisions you can make as a German business owner. While Soll is the default, Ist is almost always superior for eligible businesses because it aligns your VAT payments with when you actually receive money.

If you're under €800,000 in annual revenue, not required to use Soll, and haven't yet applied for Ist-Versteuerung, the application process is quick and the benefits are substantial. Even a 30-day payment cycle delay from your customers can mean €20,000-€50,000 in permanent additional liquidity — cash you can use for growth, stability, or operational needs.

Don't leave money on the table. Evaluate your eligibility today and submit your application this month if you qualify.