The Tax Advisor: Trust Comes at a Price
A good tax advisor is worth their weight in gold — no question. Especially for freelancers and self-employed professionals, professional advice is often indispensable. But every minute your tax advisor spends sorting and preparing your charging cost receipts costs you real money.
German tax advisors bill according to the Tax Advisory Remuneration Ordinance (StBVV). Preparing and reviewing documents quickly adds up to €50–100 per hour. If you hand over your charging costs as a messy pile of receipts, just the sorting and DATEV entry can take several hours.
The Critical Difference: Data Quality
LadeKosten doesn't replace your tax advisor — the app makes their work faster and cheaper. The key advantage: You deliver ready-to-use, GoBD-compliant data in DATEV format.
For your tax advisor, this means:
- No manual entry: Data arrives as a ready-made DATEV CSV.
- No follow-up questions: Every charging session is fully documented.
- No GoBD concerns: Records are audit-proof.
Cost Comparison
| Aspect | LadeKosten + Tax Advisor | Tax Advisor Only |
|---|---|---|
| Charging cost documentation | from €7.99/year | €300–600/year (estimated) |
| Data format | DATEV CSV (import-ready) | Receipts, Excel, paper |
| Tax advisor effort | Minimal (import + review) | High (entry + sorting) |
| GoBD compliance | ✅ Automatic | ✅ Manually ensured |
| Wallbox integration | ✅ Automatic | ❌ Not possible |
| Allowance optimization | ✅ €0.34/kWh automatic | Extra charge |
| Your time spent | 5 min/month | 0 min (but costs) |
How the Partnership Works
1. You Document with LadeKosten
Record every charging session — manually or automatically via wallbox integration. The app calculates the allowance, categorizes business and private sessions, and creates GoBD-compliant records.
2. Create DATEV Export
At the end of the month or quarter, export all data with one click as a DATEV CSV. This file contains all booking entries in the format that DATEV understands directly.
3. Tax Advisor Imports
Your tax advisor imports the CSV file directly into DATEV. No manual entry, no follow-up questions, no correction rounds. They can focus on what you're actually paying them for: tax advice and optimization.
Real Numbers: What Does a Tax Advisor Actually Cost?
Many freelancers and self-employed professionals underestimate how much charging cost documentation actually costs when handled entirely by a tax advisor. Let's break down the numbers.
The German Tax Advisory Remuneration Ordinance (StBVV) governs fees. Depending on the firm and region, hourly rates for bookkeeping work range from €150 to €300. On top of that, many firms charge a monthly base fee for ongoing bookkeeping of €50 to €150.
Sample Calculation: Charging Costs at the Tax Advisor
Let's say you drive an EV for business and regularly charge at home via your wallbox. You have roughly 20 charging sessions per month. Your tax advisor needs to handle:
- Reviewing and sorting receipts: 15–30 minutes per month
- Manual DATEV entry: 20–40 minutes per month
- Correctly applying the allowance (currently €0.34/kWh for 2026): 10–15 minutes
- Ensuring GoBD-compliant documentation: 10–20 minutes
That's 55–105 minutes per month — roughly 1 to 1.5 hours. At an hourly rate of €200, that's €200–300 per month just for charging cost documentation.
Annualized: €2,400–3,600 solely for preparing your charging cost records.
And with LadeKosten?
LadeKosten costs from €7.99 per year. The app handles recording, categorization, allowance calculation, and the DATEV export automatically. Your tax advisor simply imports the finished CSV file — effort: under 5 minutes per month.
Savings: Even with conservative estimates, you save several hundred euros per year in tax advisor fees. The app pays for itself after the very first month.
When You Still Need a Tax Advisor
LadeKosten is a specialized app for charging cost documentation — not a replacement for professional tax advice. There are situations where a tax advisor remains indispensable:
Complex Tax Situations
If you have multiple income sources (e.g., freelance work plus rental income plus capital gains), you need someone who understands the big picture. Optimizing taxes across different income types is not a job for an app.
First Year of Self-Employment
During the startup phase, there are many critical tax decisions: legal structure, VAT advance returns, investment deductions. A tax advisor helps you make the right choices from day one.
Tax Audits
When the tax office comes knocking, you want a professional by your side. This is where the combination really shines: LadeKosten provides complete, GoBD-compliant records that withstand an audit. Your tax advisor knows the procedural rules and advocates for your interests.
Cross-Border Situations
Anyone working across borders or charging abroad faces additional tax questions. This requires specialized expertise that goes beyond documentation.
The takeaway: LadeKosten complements your tax advisor — the app handles the legwork so your advisor can focus on what matters most.
The Ideal Workflow: App + Tax Advisor
The best solution isn't app or tax advisor, but app and tax advisor — with a clear division of labor. Here's the optimal workflow:
Step 1: Daily Recording with LadeKosten
Every charging session is documented directly in the app. Thanks to wallbox integration, home charging is even captured automatically. The app records date, time, kWh, cost, and whether the session was business or personal. Who needs the app and why — we've summarized it here.
Step 2: Monthly DATEV Export
At the end of each month, create the DATEV export with a single click. The file contains all booking entries in a standardized format — including correct account assignments and the 2026 allowance rate.
Step 3: Handoff to Your Tax Advisor
Send the DATEV CSV via email or a secure portal to your firm. Your tax advisor imports the file directly — no manual rework needed.
Step 4: Tax Advisor Focuses on Strategy
Instead of spending hours on data entry, your tax advisor can focus on what truly creates value: Tax optimization, strategic planning, and proactive advice. You're paying for expertise, not for typing numbers into a system.
The Result
- You save time: 5 minutes per month instead of hours sorting receipts
- You save money: Lower tax advisor costs with better data quality
- Your tax advisor is happier: Clean data instead of receipt chaos
- The tax office is satisfied: Seamless GoBD-compliant documentation
Compared to manual documentation with spreadsheets, this workflow offers significantly more reliability and fewer errors — find out why Excel is costing you money in the long run.
Checklist: App or Tax Advisor?
Not sure whether LadeKosten is right for you, or whether you should leave everything to your tax advisor? These five questions will help you decide:
1. How Many Charging Sessions Do You Have Per Month?
- Under 5: You can probably get by without an app — the effort is manageable.
- 5 to 20: LadeKosten saves you noticeable time and money.
- Over 20: The app is almost a must — manual tracking becomes impractical.
2. Do You Regularly Charge at Home?
If yes, you can use the €0.34/kWh allowance. LadeKosten calculates it automatically and documents it in a GoBD-compliant manner. Without the app, you need to handle this calculation yourself or pay your tax advisor to do it.
3. Do You Have a Wallbox?
With wallbox integration, LadeKosten captures every charging session automatically. Without the app, you need to manually log each session — or provide your tax advisor with your electricity bill and a self-made spreadsheet.
4. What's Your Budget for Tax Advisory Services?
If you're already watching every euro with your tax advisor, the relief provided by LadeKosten is especially valuable. €7.99 per year versus several hundred euros for manual receipt preparation — the math is clear.
5. How Important Is Audit-Proof Documentation?
In a tax audit, every detail counts. LadeKosten automatically creates GoBD-compliant records with timestamps and seamless documentation. That gives both you and your tax advisor peace of mind.
Recommendation: If you answer at least two of these questions with "yes" or "high," LadeKosten is worth it — whether as a complement to your tax advisor or as a standalone solution for charging cost documentation.
When Is a Tax Advisor Alone Sufficient?
A tax advisor without app support can be sufficient if, based on our research as of March 2026:
- You have very few charging sessions (e.g., only occasional public charging)
- You don't mind higher costs for receipt preparation
- You don't have a wallbox and don't need automatic recording
Who Is LadeKosten For?
LadeKosten is especially worthwhile if you:
- Regularly charge at home and want to use the €0.34/kWh allowance
- Want to reduce your tax advisor's workload and lower their costs
- Want clean DATEV data without additional effort
- Want to use automatic wallbox recording for seamless documentation
Read More
Conclusion
LadeKosten and your tax advisor aren't an either-or choice — they're a team. The app delivers the data, the tax advisor delivers the expertise. The result: Lower costs for receipt preparation, better data quality, and more time for what really matters — optimal tax planning.
The combination is what makes the real difference: Your tax advisor gets ready-to-use, GoBD-compliant data in DATEV format, and you save not just money but also headaches. Whether you use the app on its own or alongside your tax advisor — with LadeKosten, you're on the safe side.