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ForTax firms

The firm stays focused.

Inquiries handle themselves.

Clients ask about receipts, deadlines, balances, on the phone, by email, in chat. AI agents clear standard inquiries from the knowledge base, document receipts in structure, and route only what really matters. Like an extra receptionist who never calls in sick.

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In short

The rinqo AI agent for tax firms answers common client questions about deadlines, receipt submission, and DATEV access, books consultation appointments, and routes cases needing advice to the responsible tax advisor, compliant with GDPR and German tax-advisory law, hosted in Germany. From the same stored company knowledge, rinqo answers enquiries from chat, the web form and the inbox and gives the team on the ground what it needs.

The situation

Germany has 53,803 tax firms and 88,995 tax advisers, as of 1 January 2025, according to the federal chamber BStBK. 36,379 of those firms are sole practices, a good two thirds. Call volume swings with the tax cycle: before VAT deadlines, during income-tax season, shortly before the filing dates. And the questions coming in are rarely new ones. Clients ask 'Did you get my receipt?', 'When's the deadline?', 'Is my annual statement done?'. Each question pulls the advisor out of casework. An agent that absorbs the standard third returns concentration time. The same stored knowledge carries every channel you switch on, and answers the questions your team would otherwise pass along.

53,803

tax firms in Germany, as of 1 January 2025

Source: Bundessteuerberaterkammer 2024

36,379

of them sole practices

Source: Bundessteuerberaterkammer 2024

Where it pinches

  • Client calls for the fourth time about the same receipt, the advisor breaks focus.
  • Deadline questions ('When's the VAT filing due?') come up a hundred times per quarter.
  • DATEV access forgotten, clients call instead of using the portal.
  • New inquiries (prospect clients) get lost between ongoing calls.
  • Firm assistant is pinned to scheduling instead of casework.

One knowledge base, every channel

Where rinqo works for Tax firms

Phone agentprimary

Take client calls on deadlines, assessment status, document submission 24/7. Identification by client number, integration with DATEV/addison/CASA-XL via calendar or webhook.

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Email agent

Standard inquiries on VAT pre-declarations, deadline reminders, document-submission notes. Escalate complex mandates (complaints, legal) to the responsible advisor.

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Chat agent

Answers prospect questions on services and document checklists on the website and books initial consultations, without interrupting the firm.

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Personal agent

Firm knowledge on demand: deadline overviews, client-onboarding checklists, fee modules. Drafts emails and info sheets in the firm's voice.

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Marketing agent

Expert posts, firm profile and clear explanations of your field for LinkedIn and your own site, in your firm's voice. Objective promotion within professional conduct rules, showing competence rather than pushing.

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How rinqo solves this

The agent filters before you pick up

A client calls. The agent identifies itself as the firm assistant, asks what the call is about and answers everything organisational: general deadlines, required documents, how DATEV access works, appointment booking. Client-specific details are not shared on the phone, the agent takes them down in a structured way, and your firm calls back. Advisory questions and individual cases are put straight through.

The same knowledge, wherever it is asked

Client-communication guidelines, deadline calendar, DATEV how-tos, vacation coverage, the agent answers exactly the way your firm does. No off-the-shelf responses, only your firm's sentences. The same applies to every channel you switch on, and to your team looking it up instead of asking around.

Appointments directly into the advisor's calendar

The agent knows each advisor's calendar (Google Calendar, Outlook or a CalDAV calendar), books first meetings, tax check-ins, or annual reviews, and sends confirmations with a prep checklist automatically.

What the agent handles

  • Deadline questions (VAT, income tax, payroll, annual statement) answered
  • Receipt requests recorded in a structured way and passed to the clerical team
  • DATEV access requests recorded, with the invitation triggered by your team
  • Consultation appointments booked (first meeting, annual review, tax check)
  • Extension requests documented
  • Prospect clients qualified (revenue, industry, need)
  • Look internal knowledge up on the spot instead of asking around
  • Turn references and vacancies into on-brand posts

Our recommendation

Time is the scarcest resource in tax practice. The agent absorbs the routine third, so the advisor can focus on complex cases. Classic support-relief use case. The knowledge behind it then carries the other channels and the questions asked internally.

GDPR + professional confidentiality

Tax firms fall under GDPR, professional code, and the Tax Advisory Act (§62 confidentiality). rinqo runs the application in Germany and processes client data exclusively within the EU, signs the Article 28 data-processing agreement, and documents all subprocessors (all in the EU) transparently on /security. No data leaves the EU.

  • Hosting Hetzner Germany, data processing entirely in the EU
  • Data-processing agreement included, all subprocessors EU-based
  • Retention configurable; up to 10 years for chat and email (§147 AO), up to 365 days for phone
  • §62 confidentiality: transcripts encrypted, access firm-only
  • AI Act Art. 50: in-call AI disclosure built in (required from 2026-08-02)

Frequently asked questions

Specific industry pages

Sven Pflüger

Sven Pflüger

Founder, rinqo

Founder of rinqo. Builds a company memory where an organisation's knowledge comes together and stays available, and the AI agents that work from it: on the phone, in the inbox, in chat, in marketing and in further roles. Writes here about bringing AI into companies, about data protection, and about what holds up in daily operation. Developed in Germany, processed in the EU, no US providers.

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Last updated:

Sources

  1. 1.Berufsstatistik 2024 (Stichtag 1. Januar 2025), Bundessteuerberaterkammer (2024)

Channel deep-dive

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Phone agent for Tax Advisors

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