Legal & Advice

Decision Deadline Radar Agent

Deadlines do not announce themselves. You notice the objection deadline on the day it expires.

Calculates the deadline, late payment surcharge and interest to the day, citing the legal basis for each stage.

Open agent
Public administration

Four processes that take up the most time today

Developed in Germany · Hosted in the EU

Developed in Germany · Hosted in the EU or on-premises

Delivered together with

STACKIT Sovereign hosting in Germany, single-tenant from the first user.
Rödl Legal, tax and compliance expertise for legally sound deployment.
4P Consulting Advisory and implementation for the public sector, starting with the AI readiness assessment.

A tax assessment comes with three clocks, and none of them is in the calendar.

The assessment arrives on paper or in the electronic mailbox, often on a Friday. Whoever opens it sees the amount and the date, but three deadlines hang on it: the end of the objection period, the due date for the additional payment and the day from which late payment surcharges accrue. Each of these dates is calculated by hand and written into the follow-up diary, if someone remembers to.

4days to deemed serviceThe assessment counts as served on the fourth day after posting, § 122 (2) no. 1 AO, and if that day falls on a weekend, it moves to the next working day.
48assessments a monthThat is how many arrive at a firm with 300 clients and are entered into the follow-up diary by hand.
144dates a monthFor every assessment, the objection deadline, the due date and the start of late payment surcharges have to be calculated, each under its own provision.
1overlooked dateOne is enough: once the one-month period of § 355 AO has expired, the objection is lost and the assessment stands.

With all 144 dates in the follow-up diary, each with its provision and date, missed deadlines fall by 60%.

The 60% reduction in missed deadlines is this agent's headline figure. The number of assessments, and the 144 dates that follow from it, describe a typical month at a firm of this size; they are not counted figures.

Three steps through the process.

The agent calculates three dates per assessment, each with the provision it rests on; the tax specialist drafts and signs the objection.

Read the assessment data from the document

The agent reads the tax type, the assessment date, the amount and the day of posting. If the posting date is missing, it flags the assessment as not yet calculated.

Income tax assessment 2024, ref. 217/504/91223, dated and posted 6 May 2026

Calculate the dates with their provisions

The agent calculates the end of the objection period, the due date and the day from which late payment surcharges accrue, each with its provision and version in force. If the fourth day after posting falls on a Sunday, such as 10 May 2026, it records 11 May 2026 as the date of service under § 108 (3) AO.

Served 11 May 2026, deadline 11 June 2026, surcharge from 12 June 2026

Place the deadline sheet in the follow-up diary

The agent attaches a deadline sheet to the case listing the dates with provision, amount and the options still open. The tax specialist assigns the follow-up and signs the objection.

fristen_217-504-91223.pdf, 3 dates, 2 options open while the deadline runs

What the agent does not do.

It does not lodge an objection.

It names the options that remain open until 11 June 2026. The tax specialist drafts and signs the objection.

It neither pays nor defers anything.

It states the due date and the day from which late payment surcharges accrue under § 240 AO, including the three-day grace period of § 240 (3) AO. Any application for suspension of enforcement is made by the firm.

It does not calculate the amount of interest.

It names the day on which the interest-free period of § 233a AO ends and the amount on which interest is charged. The interest itself only appears in the tax office's assessment.

Connected systems

  • The firm's electronic mailbox
  • deadline control in the practice management system
  • document management

Operations

  • Deployment modelEU cloud, private cloud or on-premises
  • Data processingGDPR-compliant, no model training on your data
  • Responsible teamsTax advisers, accounting, clients

The questions that come up before the first meeting.

How quickly is the Decision Deadline Radar Agent ready to use?

A pilot typically runs on your own data within 4 to 6 weeks. The agent connects to your existing systems rather than running as a separate, parallel environment.

Where is the data processed?

EU cloud, private cloud or on-premises. Processing is GDPR-compliant and models are never trained on your data. Details in the Trust Center.

Where does the figure “60% fewer missed deadlines” come from?

It is based on experience from comparable projects and process benchmarks, not a commitment. We work out the realistic effect for your organisation during the assessment before the pilot.

Related agents.

Intake review, case 2026/04711

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