What Smartsteuer does

Smartsteuer GmbH, founded in 2006 and headquartered in Hannover, Germany, operates an online tax preparation platform that enables German residents to complete and electronically submit their annual income tax returns (Einkommensteuererklärung) directly to the Finanzamt via the official ELSTER interface. The product is delivered as a browser-based, no-download application that guides users through a structured interview, calculates live refund estimates, validates data through the proprietary smartCheck engine, and integrates with ELSTER for direct submission. A pre-filled declaration feature (VaSt) imports tax data from the Finanzamt, and the platform supports additional use cases including self-employed multi-form filings, property tax (Grundsteuer) declarations via partner fino taxtech, and document submission. The 46-person company is majority-owned by Haufe-Lexware GmbH & Co. KG within the Haufe Group, with two managing directors (Stefan Heine and Eike Hirsch).

The platform monetizes via a transactional, pay-at-submission model: registration, the guided interview, and live refund estimation are free, and users pay a flat €39.99 fee only upon final electronic submission, covering up to five returns per tax year. Customer acquisition is product-led and multi-channel, combining organic SEO, paid search (Google/Bing Ads), social media (LinkedIn, Facebook, Instagram, TikTok, YouTube), an affiliate program via AWIN AG, an ING-DiBa co-marketing integration that pre-fills banking data, and a "Kunden werben Kunden" referral program offering €15 vouchers. Beyond the core product, smartsteuer has launched a KI-Chatbot (smartsteuer AI, 2024) running on Microsoft Azure for conversational tax Q&A, a Steuer-O-Mat election tool (2022) for top-of-funnel engagement, and an internal design system (smartsteuer UI v3.8.0, 2025). The customer base spans employees, self-employed individuals, apprentices/students, and retirees; the company claims an average customer refund of €1,432 and over €1 billion in cumulative refunds processed to date.

Name

Smartsteuer

Legal name

smartsteuer GmbH

Website

https://smartsteuer.de

Company type

Private

Founded year

2006

Operating status

Operating

Headcount range

11–50 employees

Short description

Smartsteuer GmbH operates a browser-based online tax preparation platform that lets German consumers complete and electronically submit income tax returns to the Finanzamt via ELSTER, charging a €39.99 flat fee only at submission. Founded 2006, 46 employees, headquartered in Hannover and majority-owned by Haufe-Lexware.

Ownership category

akta.pro rank

Product category

Online Tax Preparation Software

NAICS

Tax Preparation Services (541213), Accounting, Tax Preparation, Bookkeeping, and Payroll Services (5412)

SIC

Services-Prepackaged Software (7372)

akta.pro primary industry

Tax Planning & Personal Tax Optimization Tools (FSAGADAJ)

akta.pro secondary industry

Revenue Systems, E-Filing & Digital Tax Administration (BPAIADAO)

Keywords

• Online tax filing
• Tax preparation software
• Income tax declaration
• Tax compliance software
• Self-service tax tools

Headquarters

HQ city

Hanover

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2C

Offering type

Software

Cost components

Technology or R&D, Marketing or Sales, Personnel, Infrastructure, Operations

Revenue model

1. Tax Return Filing Fee: Users pay a flat fee of €39.99 only when they submit their tax return to the Finanzamt. The service is free to start, register, and use the guided interview and refund calculation. Payment methods include credit card (Visa/MasterCard), PayPal, and SEPA direct debit. One paid submission includes the option to file up to 5 tax returns for the relevant tax year.
2. Partner Program / Affiliate Revenue: Smartsteuer operates an affiliate program via AWIN AG where publishers earn commissions for driving sales. Additionally, a 'Kunden werben Kunden' (referral) program provides €15 vouchers for referrers and €15 discount for referred customers, supporting customer acquisition at low cost.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels9 records

Core offering

Smartsteuer provides a browser-based, self-serve online tax preparation platform for German individual taxpayers (employees, self-employed, apprentices/students, and retirees) that guides users through an interview-style income tax declaration, calculates the live expected refund, validates the data via smartCheck, and transmits the return directly to the German tax authority (Finanzamt) through ELSTER integration. The service is free to register and use, with a flat €39.99 fee charged only upon electronic submission, covering up to five tax returns per tax year.

Product overview

Smartsteuer is a German online tax preparation platform that offers a unified suite of products for digital tax filing. The core offering is the Online-Steuererklärung, an interview-based tax declaration tool that transmits data to German tax authorities via ELSTER. Key integrated features include smartCheck for error validation, Vorausgefüllte Steuererklärung (VaSt) for importing pre-existing tax data, and the KI-Chatbot for AI-powered tax assistance. The platform extends with dedicated products including the Grundsteuer property tax tool (powered by fino taxtech) and free auxiliary tools like Steuer-O-Mat and tax calculators. Additional services include Belegservice for document submission and a customer referral program. The company also maintains smartsteuer UI, an internal design system for application development.

Differentiator

Problem solved

Functional benefit

Brands

• smartsteuer UI: The design system of smartsteuer, a collection of reusable components used to build smartsteuer applications.

Products and services

• Online-Steuererklärung (Online Tax Declaration) Core product: a browser-based, guided-interview income tax declaration service for German individual taxpayers (employees, self-employed, apprentices/students, retirees). Users register free, complete the interview, see a live refund estimate, and pay €39.99 only upon electronic submission via ELSTER; the fee covers up to five tax returns per tax year.
• Grundsteuer (Property Tax Declaration) Separate paid product for completing and submitting German property tax declarations (Grundsteuererklärung) to the Finanzamt. Developed, hosted, and operated by partner fino taxtech GmbH and integrated into smartsteuer as a complementary offering for property owners.

Quantifiable outcome

• Average tax refund of €1,432 for customers
• +3 more outcomes

Named customers4 records

Segments4 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration9 records

AI capability4 records

Feature8 records

Partnerships

Five partnerships are on record, tiered core and minor.

• Lexware Office (Haufe-Lexware)coreTechnology or IntegrationSmartsteuer offers a combination product with Lexware Office, enabling self-employed users to seamlessly transfer accounting data directly into their tax return, reducing manual data entry and streamlining the workflow from bookkeeping to tax filing.
• fino taxtech GmbHcoreTechnology or IntegrationSmartsteuer partners with fino taxtech GmbH (Universitätsplatz 12, 34127 Kassel) to provide a Grundsteuererklärung (property tax declaration) tool. fino taxtech develops, hosts, and operates the tool; smartsteuer integrates it as a complementary product offering.
• ING-DiBa AGminorGTM or Marketing PartnerING-DiBa customers can access smartsteuer through a dedicated co-branded integration. On customer request and consent, ING Diba transfers relevant banking data (name, email, DOB, tax ID, customer number) to smartsteuer to pre-populate a pre-filled tax return. Smartsteuer shares limited contract data back for commission purposes.
• AWIN AGminorGTM or Marketing PartnerSmartsteuer operates an affiliate / partner program via AWIN AG (Sapporobogen 6-8, 80637 München). Third-party publishers can register to promote smartsteuer via embedded advertising on their websites and earn commission on resulting paid tax filings.
• Haufe Group (parent company)coreOthersSmartsteuer GmbH is majority-owned by Haufe-Lexware GmbH & Co. KG, a company within the Haufe Group. The parent company provides corporate infrastructure, shared services (HR, finance), and access to the broader Haufe Group ecosystem of tax and HR software products.

Scale indicators4 records

Recent moves6 records

Expansion highlights5 records

Emerging players

• Steuerbot: Steuerbot offers a simplified conversational online tax declaration in Germany, overlapping with smartsteuer on the employee segment but focused on a more automated, lower-touch user experience.
• Taxfix: Taxfix is a Berlin-based mobile-first tax filing app targeting German employees with a guided chat experience; it competes for the same primary employee persona as smartsteuer with a differentiated delivery model.

Others

• ELSTER (Bayerisches Landesamt für Steuern): ELSTER is the German federal tax authority's free electronic filing portal; it is not a commercial competitor but sets the baseline experience and price benchmark that smartsteuer must justify its €39.99 fee against.
• Vereinigte Lohnsteuerhilfe (VLH): VLH is a major German Lohnsteuerhilfeverein (tax aid association) offering low-cost assisted tax filing to employees; it competes for the same price-sensitive German employee segment via a membership/cooperative model rather than software.

Direct peers

• WISO Steuer (Buhl Data Service): WISO Steuer is the leading commercial German tax preparation software from Buhl Data Service, directly competing with smartsteuer for the same German consumer filing market with similar product positioning and pricing.
• Buhl Data Service: Buhl Data Service is the parent of WISO Steuer and Taxman and a longstanding direct competitor to smartsteuer across German consumer and small-business tax software, with overlapping product lines and pricing.

Broad incumbents

• DATEV: DATEV is the dominant German tax and accounting software provider serving tax advisors and mid-market businesses; it operates in an adjacent (professional) segment but shapes competitive dynamics in German tax software broadly.
• Lexware (Haufe-Lexware): Lexware is smartsteuer's sister brand under Haufe-Lexware and offers a broader suite of accounting, payroll and business software for SMBs and self-employed; it overlaps on the self-employed tax filing flow via the smartsteuer combination product.
• H&R Block: H&R Block is an established US tax preparation brand combining DIY software with assisted filing; useful as a comparable for smartsteuer's product-led, consumer-direct go-to-market motion.
• Intuit TurboTax: TurboTax is the global benchmark in consumer tax preparation software and a relevant comparable for smartsteuer's guided-interview, live-refund-calculation model, even though it operates in a different (US/Canada) tax jurisdiction.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

• YouTubeyoutube.com/channel/UCu02GkFNrMRzwysT2SEmNrQ
• Facebookfacebook.com/smartsteuer
• LinkedInlinkedin.com/company/smartsteuer-gmbh
• Instagraminstagram.com/smartsteuer.de
• TikToktiktok.com/@smartsteuer

Compliance5 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Smartsteuer