# KStG Optionsmodell 2026 — German §1a tax comparison

> German §1a tax comparison (iPhone/iPad app by IVAN BOBAN.)

- Source: https://appshunter.io/ios/app/kstg-optionsmodell-2026/id6764435617 (this page in markdown: same URL + `.md`)
- Developer: [IVAN BOBAN](https://appshunter.io/developer/1882842325)
- Category: Finance
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 18.0 · 5 MB
- Languages: English, German
- Released: 2026-04-29
- Data updated: 2026-06-12
- User reviews in markdown: https://appshunter.io/ios/app/kstg-optionsmodell-2026/id6764435617/reviews.md

## What is KStG Optionsmodell 2026?

Model Germany's § 1a KStG corporate-tax option for partnerships in a focused advisory workflow. Compare the transparent default model, the corporation-tax option, and a GmbH conversion path using profit, municipal trade-tax multiplier, distribution rate, partner shares, additional taxable income, church-tax status, and assessment type.

The app models corporate income tax, solidarity surcharge, trade tax, withholding tax on distributions, and the § 35 EStG trade-tax credit in the default partnership model. Multi-year projection, sensitivity analysis, quick-pick municipal multipliers, and the filing-deadline tracker help prepare a better client conversation.

Premium Pro unlocks scenarios beyond three years, more than two partners, the full GmbH comparison, PDF/CSV export, and ad-free use.

This app is not tax advice under German law. It is a calculator and comparison tool; binding decisions should be reviewed by a qualified German tax professional.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Premium Pro | $44.99 | one-time |



## Version history (last 3 releases)

### 1.0.3 — 2026-06-07

Stability and groundwork for upcoming In-App Events: the app-wide event deep link (kstgpartner://) is now active so seasonal KStG option-deadline reminders open directly in the app. Minor improvements.

### 1.0.1 — 2026-05-11

Improved privacy: the app now shows an EU/UK consent screen on first launch so we can request personalized ads where required by law. No impact on calculation accuracy or premium features.

### 1.0 — 2026-04-29

No release notes.

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All apps by IVAN BOBAN: https://appshunter.io/developer/1882842325

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-12.*