Bookkeeping service in Hamburg · digital throughout Germany
Bookkeeping in Germany, explained in English
We take care of your monthly bookkeeping*, bring backlogs up to date and provide a dedicated bookkeeper when you are short of staff. Digital, at clear prices and with our partner tax advisors for everything tax-related.
What we take care of
From monthly bookkeeping to catching up on several years. For every service you receive a clear quote in advance.
Monthly bookkeeping
We book your receipts and bank transactions in DATEV, reconcile the accounts and deliver your reports every month.
from €149 a monthPayroll
Payslips, filings with the health insurance funds and wage tax returns, including hourly wages, mini-jobs and collective agreements.
from €25 per employeeCatch-up bookkeeping
Backlogs, wrong entries, a change mid-year: we review, plan and bring everything up to date.
Fixed price after a backlog checkDigitalisation
Receipts by app, bank transactions automatically, e-invoicing ready for 2027. We set it up and train your team.
Fixed price after a reviewBusiness consulting
Plan your liquidity, understand your figures, prepare meetings with your bank.
from €100 per hourExternal bookkeeper
Too many entries, too few staff? A dedicated GKM bookkeeper works for you on a monthly contingent, digitally and on site when needed.
from €2,000 a monthBookkeeping and taxes in one process
GKM keeps your books. Everything tax-related is handled by our partner tax advisors. You sign a separate contract with them and still have one process.
GKM What we do
- Monthly bookkeeping and account reconciliation
- Payroll and wage tax returns
- Catching up on backlogs
- Digitalisation and training
- Business consulting
Partner What our partner tax advisors do
- VAT returns
- Annual financial statements
- Tax returns
- Tax advice
- Contact with the tax office
Already have a tax advisor? Then we work with them and deliver the bookkeeping in DATEV format. How we work with tax advisors
How to become a client
No paper, no post. Most clients are ready to start within a week.
Send a request
Answer a few questions about receipts, accounts and employees.
Receive a quote
By e-mail, tailored to your business. We only ask for what we need for the bookkeeping.
Sign online
Agreement, data processing agreement and power of attorney in the client portal, each in German and English.
Upload documents
In the client portal. With your authorisation, we request the data from your previous advisor ourselves.
Prices
Every business works differently. That is why we state starting prices and prepare your quote after a short questionnaire. Net, plus VAT.
from €149 a month
Monthly bookkeeping with reports and client portal.
from €25 per employee
Including all filings. No base fee.
from €2,000 a month
A dedicated GKM bookkeeper on a monthly contingent.
Consulting and support from €100 per hour.
Why companies switch to GKM
In English, under German rules
We explain German requirements in plain English, so you know what is due and why.
One process for bookkeeping and taxes
GKM books, the partner tax advisors file. You have one point of contact.
Digital and on site
Everything runs online. In Hamburg we also come to you for setup and meetings.
Clear prices
Starting prices on the website, a binding quote before you start. No surprises on the invoice.
DATEV as standard
Your data fits every tax advisor in Germany.
Catch-up even after years
With a fixed plan and a fixed price per month, without reproach and without piles of paper.
Your contact
Gagik Kreuz, managing director
Gagik Kreuz holds the first meeting personally, in English, German or Armenian. He clarifies with you what your business needs, and you then receive a quote that fits exactly. He remains your contact later on whenever something needs to be decided.
- Location
- Hamburg
- Languages
- English, German, Armenian
- Phone
- +49 40 2989 6395
Your data in safe hands
Bookkeeping is a matter of trust. That is why the client portal is built so that you can always see what happens with your documents.
Second factor
If you wish, you protect your access additionally with a code from an authenticator app. For our team it is mandatory.
Encrypted transfer
All connections are encrypted. You exchange documents in the portal instead of by e-mail.
Every access logged
Sign-ins, signatures and downloads are recorded completely. The log cannot be changed afterwards.
Contracts in two languages
Agreement, data processing agreement and power of attorney in German and English, signed digitally with time stamp and checksum.
Confidentiality
We treat all information about your company confidentially, also after the end of the contract. It is written into the agreement.
Data in the EU
The portal runs at a German provider in a data centre in the EU. Processing on your behalf is covered by an agreement under Art. 28 GDPR, with all service providers openly named.
Industries we know
Bookkeeping and payroll with the specifics of your industry.
Frequently asked questions
What does a bookkeeping service cost?
With us from €149 a month, payroll from €25 per employee. The exact price depends on the number of receipts, accounts and how you work. You receive your quote after a short questionnaire.
May a bookkeeping service prepare my tax return?
No. In Germany, tax returns, annual financial statements and VAT returns may only be prepared by tax advisors. That is why we work with partner tax advisors or with your own tax advisor.
Do you work in English?
Yes. We answer e-mails, explain reports and hold meetings in English. Contracts are available in English for information, the German version is legally binding.
How does switching from my current advisor work?
You give us your authorisation, we request the data and take over the DATEV records.
Do I have to send receipts by post?
No. A photo with your phone, an upload in the client portal or forwarding by e-mail is enough.
I have not booked anything for years. Can you help?
Yes. That is exactly what our catch-up bookkeeping is for. We start with a backlog check.
Your quote in two minutes
A few questions about your business, the quote arrives by e-mail.