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Best AI Cash Flow Forecasting Tools for German Small Businesses

Profitable German small businesses still run short of cash, usually because a tax prepayment, a late client payment, and a VAT bill land in the same month. A good cash flow forecasting tool for a Kleinunternehmen in Germany shows that squeeze weeks ahead. This guide covers the German dates and rules your forecast needs, then the tools that help. “Kleinunternehmen” here means any small business. For the VAT exemption, see our Kleinunternehmerregelung guide.


A note on “AI”: I couldn’t verify AI features beyond automatic bank syncing and rule-based forecasting in any tool below. Treat “AI-powered” claims as marketing until you’ve tested them.

Subtopic: the German dates and rules your forecast must include

Most forecasting tools pull in bank data and open invoices. They won’t know your tax calendar unless you add it. Sources, including Saxony’s official tax calendar, agree on these 2026 dates:

Item Due dates Notes
Income tax prepayment 10 Mar, 10 Jun, 10 Sep, 10 Dec Based on your last assessment, split into four equal parts (§37 EStG). A €400-per-year minimum and €100-per-date minimum apply, per one source.
Trade tax (Gewerbesteuer) prepayment 15 Feb, 15 May, 15 Aug, 15 Nov Gewerbetreibende only, not Freiberufler. In 2026 some dates shift for weekends (16 Feb, 17 Aug, 16 Nov).
VAT return (UStVA) 10th of the following month or quarter A Dauerfristverlängerung moves filing and payment back by one month.

A catch-up can also hit you. If the Finanzamt raises your prepayments, one source says missed earlier dates may be collected together at the next date. Ask your Steuerberater how this works in your case.

Late payers. Between businesses, a customer is in default at the latest 30 days after the due date and invoice receipt (§286 BGB). Default interest is the base rate plus 9 percentage points, which is 10.52% a year since 1 July 2026 with the 1.52% base rate. There’s also a €40 flat fee per overdue invoice (§288 BGB). Include late-payment assumptions in your forecast, and put payment terms on every invoice (see our invoicing guide).

Kleinunternehmer. If you use the VAT exemption, you skip UStVA payments, which removes one cash drain. Income-tax prepayments still apply.

Health insurance. This is a fixed monthly cost for the self-employed, so enter it as a recurring item. See our health insurance comparison guide.

The tools

All price and feature comparisons below come from vendor-published or competitor pages, so treat them as starting points and check each provider’s own site.

Agicap

Agicap is the best-known specialist in these comparisons. It connects to banks and accounting systems such as DATEV, lexoffice, and sevDesk, and generates a forward-looking forecast with scenarios. Pricing is on request. Third-party pages report roughly €49–149 a month, and one says small businesses often pay over €3,000 a year.

Good for: Growing businesses with several accounts or entities.

Tidely

Tidely is bank-based and aimed at small and medium-sized businesses, with personal onboarding. A competitor’s table lists it from roughly €35–39 a month for one company, one bank account, and one accounting integration. That page is a year old, so confirm current pricing.

Good for: Small businesses that want a lean tool with onboarding.

Commitly and finban

Commitly offers a clear dashboard with a VAT forecast, reported from about €39–45 a month. finban is described as the cheapest entry for solo businesses, from about €26 a month. Both come from a competitor’s page, so verify.

Good for: Solo and very small businesses watching costs.

Accounting apps with a cash flow view (lexoffice, sevDesk, Papierkram)

One review says lexoffice offers a cash flow overview with a forecast and bank sync from about €7.90 a month, but not real liquidity planning. It rates sevDesk’s and Papierkram’s forecasting as limited. These are good first steps if you already use them. See our bookkeeping guide.

Good for: Businesses that only need a quick view, not scenarios.

Quick comparison

Tool Approach Price (as reported) Best for Caveat
Agicap Bank and ERP synced forecast On request; ~€49-149/month reported Growing SMEs Price opaque
Tidely Bank-based forecast ~€35-39/month Small SMEs Pricing page is dated
Commitly / finban Bank-based ~€26-45/month Solo and small Competitor-sourced
lexoffice, sevDesk, Papierkram Cash flow overview From ~€7.90-9/month Basic view Limited forecasting

Prices change often, so confirm them on each provider’s site.

Which one should you choose?

  • Already use lexoffice or sevDesk and want a quick view: start with the built-in overview.
  • Need scenarios and a real forecast: try Agicap, Tidely, Commitly, or finban on their free trials.
  • Solo business on a budget: compare finban and Commitly.
  • Whatever you choose: add your tax prepayment dates, VAT, and recurring costs by hand if the tool doesn’t import them.

FAQ

Do I need a tool, or is Excel enough?
Excel works for a simple forecast. One comparison notes spreadsheets stop matching reality after a few months without bank sync, so decide based on how many accounts and invoices you have.

Does a forecasting tool know my tax prepayments?
Not automatically. Enter them from your Steuerbescheid and the dates above.

Do Freiberufler pay trade tax?
No. Trade-tax prepayments apply only to Gewerbetreibende. See our Freiberufler vs Gewerbe guide.

How far ahead should I forecast?
Sources vary. One mentions a 13-week view for businesses. Choose a horizon that covers your next tax dates.

Sources: Saxony tax calendar, Steuerschroeder tax dates 2026, Rechner-Hub prepayment guide, Juraforum: Vorauszahlungen, Zahlungsziele und Verzugszinsen (§288 BGB), Verzugszinsen 2026 (Lulius), Qonto: liquidity software, Foreqast comparison 

Last updated: October 2026.This post is for informational purposes only and isn’t tax or financial advice. Consult a licensed Steuerberater for your own deadlines and amounts.

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