Month 1: focus on clean registrations and ELSTER. No heavy marketing campaign while the tax number is missing. Set up Jupiter ERP and write an internal test invoice.
Month 2: first real customer invoices, assign payments, collect receipts. Check whether small business or standard taxation fits reality. Talk to your advisor if revenue grows faster than planned.
Month 3: fix routines: weekly receipt scan, monthly account review. Read tax office and IHK mail immediately. Note deadlines.
Month 4: tighten contracts when projects repeat. Adjust prices if you underestimated. Free only fits very few invoices. Plan Basic when you need quotes.
Month 5: investments only with receipt and clear business assignment. As small business you do not reclaim input VAT. As standard taxpayer check input VAT deduction.
Month 6: half-year review: revenue vs. questionnaire forecast. Inform tax office if needed when figures diverge. Plan holiday but keep ELSTER deadlines in the calendar.
Month 7: market only when you can deliver. New customers without capacity hurt reputation. Document working time for later price adjustments.
Month 8: review insurance: is liability still fit? Update equipment list. Privacy: deletion concept for old contact requests.
Month 9: involve tax advisor for year-end planning. Discuss advance payments and reserves. Dunning open receivables if the contract allows.
Month 10: inventory and depreciation if relevant. Book software licences as business expense. Test export from Jupiter ERP.
Month 11: prepare income tax: complete documents. Mark private shares. Time last investments in the year with advice.
Month 12: light year-end for EÜR: income, expenses, receipts. Thank customers without being pushy. Write goals for year two.