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Case study · MOJKA Finance · Rotterdam
10
1

working day for a complete tax return — one of sixteen processes

Every case started with chasing clients.
Now clients handle everything themselves.

MOJKA Finance is a financial advisory firm in Rotterdam serving both business owners and private individuals in Dutch, English and Polish. The team handles everything: from tax returns and benefits applications to lease requests, insurance and invoicing. But every process started with the same ritual — chasing clients for missing documents, scheduling appointments by hand, emailing PDF forms back and forth. Each case took days of turnaround time. Time that went to admin, not advice.

Mindsora digitised the entire service offering with tailored automation: smart intake forms that adapt to each client's situation, covering income tax, benefits, lease applications, health and motor insurance, business insurance and invoice requests. Plus an online booking system so clients schedule their own appointments. Sixteen forms now run live in three languages. Turnaround time for a tax return — the most complex process — dropped from ten working days to one.

0
Smart forms
from tax returns to invoice requests
0
Languages
NL · EN · PL
0
Follow-up calls
needed per month
What we built
1
Income tax return
Client fills in intake form
Accountant receives structured data
mojka.nl/aangifte
Income Tax Return
Dutch Tax Return
1
YEAR
2
DETAILS
3
ADDRESS
4
SITUATION
5
INCOME
6
PARTNER
7
APPROVAL
Have you received a provisional tax assessment? *
Yes
No
Assessment number *
mail.mojka.nl
M
New tax return — Jan de Vries
noreply@mojka.nl · just now
COMPLETE
NameJan de Vries
BSN•••••6789
Provisional assessmentYes — 9234.56.789.H.06
LanguageDutch
Annual_statement.pdf
Mortgage_overview.pdf
Next step
Review data → Enter in accounting software → Submit tax return
Received: 24 Feb 2026, 09:14·Processing time: < 1 working day
Second process
2
Book an appointment
Client books their own appointment
Accountant's calendar auto-filled
mojka.nl/afspraak
Online Calendar
Clients book themselves in — no phone call needed
February 2026
Mon
Tue
Wed
Thu
Fri
23
24
25
26
27
09:00
09:30
10:00
10:30
11:00
agenda.mojka.nl
Tuesday 24 February
4 appointments · auto-scheduled
LIVE
09:00P. NowakPLOnline
10:00Jan de VriesNLOffice
11:00S. AhmedENOnline
14:00M. BakkerNLOffice
The difference
BeforeNow
Tax return processing time10 working days1 working day
Booking an appointment30 min calling + confirmingClient books online
Collecting documentsChasing each clientUpload via intake form
Services digitisedTax returns onlyTax · benefits · lease · insurance · invoicing

"I used to call every client at least three times for missing documents — business owners and private individuals alike, for every tax return, every benefits application, every insurance renewal. Now they fill in everything themselves via a single form, in their own language. From tax returns to invoice requests, it all runs automatically. My clients ask how on earth it went so fast."

Mariusz Mojka
Mariusz Mojka
Owner, MOJKA Finance · Rotterdam
Implementation time
4 weeks
Package
System package
Industry
Financial services
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handling everything themselves

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