Excel is no longer enough.
Atheniks is.
Controllers and CFOs use Atheniks to manage annual budgets, plan-vs-actual comparisons and investment analyses in one clearly structured environment. Easy to use, easy to maintain, easy to understand.
The Problem
You know the problem.
We have the solution.
What controllers and CFOs tell us when we first speak.
Which version is the right one?
budget_final_v3_REALLY_final.xlsx is sitting in five different folders. Nobody knows which file is current.
The structure grows out of control
Every change to the plan triggers updates across multiple files. Over time, nobody knows how everything fits together.
No shared source of truth
Every department maintains its own file. Who has the current version is rarely clear.
Month-end close takes days, not hours
The monthly close drags on for 5 to 10 working days because figures from different sources never line up straight away.
How it works
From Excel to Atheniks in three steps.
No months-long rollout, no IT project. Most teams are productive within a week.
Step 01
Import your existing structure
Set up cost centres, accounts and planning periods once. Existing Excel files can be imported directly.
Step 02
Departments plan directly in the system
Each area fills in its budget in Atheniks. Totals, variances and the overall view update automatically.
Step 03
Plan-vs-actual at the click of a button
Variances, forecasts and reports are generated from a single data source. No more manual assembly.
Products
Two products.
Two clearly separate jobs.
Planner handles ongoing budget control. Calculus calculates whether an investment is worthwhile. Both live, both available today.
Planner
The planning tool for controllers. Clearly structured, easy to maintain and easy to understand, even for people who don’t work in planning every day.
- Annual budget structured by cost centre and month
- Plan-vs-actual automatically, without monthly rebuilding
- Build the structure once, keep it maintainable long-term
- Export for close, reporting and audit
Calculus
The analysis tool for investment decisions. Before you commit capital, Calculus calculates whether and when it pays off.
- NPV, ROI and break-even calculated automatically
- Compare equity and debt financing scenarios side by side
- Full cashflow timeline visible across the project lifecycle
- Export ready-made analysis for board and investors
Investa
For strategic investment decisions at board level. P&L, cashflow and balance sheet from one integrated model. Currently in development.
- Net present value and return calculated in 20 minutes
- Capital structure comparison (equity vs. debt)
- Monthly and annual planning in sync
AI Assistant
Your data. Your questions. Answered instantly.
Instead of searching through reports for hours: the AI assistant reads your real data from Planner and Calculus and answers questions directly and without detours.
The assistant works exclusively with your own data. No data leaves your organisation.
Results
Why controllers switch to Atheniks.
Easy to
use
Atheniks is built so that finance staff can work with it without training. What you see is what you need.
Easy to
maintain
Structure, accounts and planning periods are managed centrally. Changes take effect consistently without manual rework across multiple files.
Easy to
track
Every planning state is versioned and traceable. Who changed what and when is always visible.
GDPR-
compliant
Servers in Germany. Your financial data does not leave the EU. No effort needed for compliance checks.
See Atheniks
with your real numbers.
We show you Atheniks live with a budget structure similar to your own. So you can see how it feels before you make a decision.
Book a free demoNo commitment · No pitch deck · Your data stays with you