Accounting, Cash Register & Tax
Revenue, profit and tax calculators, cash book, digital cash register and TSE reporting assistant — everything around ongoing bookkeeping and cash management in one place.
All tools in this category
VAT Calculator
Calculate net, VAT and gross amounts with a custom tax rate.
Revenue Calculator
Calculate and sum revenue from multiple line items (quantity × price).
Profit Calculator
Calculate profit and profit margin from revenue and costs.
Break-Even Calculator
Find the sales quantity at which fixed and variable costs are covered.
Depreciation Calculator
Calculate straight-line depreciation of assets over their useful life.
Hourly Rate Calculator
Work out the hourly rate you need from desired income, business costs and billable hours.
Small Business Threshold Calculator
Check whether your revenue is within the small business VAT exemption thresholds (§19 UStG, Germany).
Budget Planner
Track income and expenses and calculate the balance automatically.
Cash Book
Log income and expenses chronologically — with a running balance.
Digital Cash Book
Cash book with CSV import, categories and a running balance — right in your browser.
TSE Cash Register Reporting Assistant
Check whether your electronic cash register was reported on time, and how long your TSE certificate remains valid (§146a AO).
Frequently Asked Questions
Are the finance tools free?
Yes, all tools in this category are completely free and require no registration.
Is my data stored?
No — unless you explicitly save a profile (.itss file), your input never leaves your browser.
Good to know about this category
Calculators, generators and templates for invoicing, e-invoicing, cost calculation and business planning — for freelancers and small businesses.
So typical administrative tasks can be handled without expensive accounting software.
- Create quotes and invoices
- Calculate revenue, profit and break-even
- Generate XRechnung and ZUGFeRD
- Keep a cash book and sketch a business plan
- Review results before sending them out
- Additionally back up important documents locally
- Consult a tax advisor for tax-related questions
The information, templates, scripts, calculations and recommendations provided are intended for educational and assistance purposes only. Always review and test any generated result before production use. IT Smart Service accepts no liability for misuse, data loss, outages, security incidents, or legal, financial or technical damages arising from incorrect or improper use. Responsibility for validation, testing and deployment decisions rests with the user.
Related Categories
Create invoices, quotes, delivery notes and other business documents in a legally compliant way — with a customer database and automatic document chaining.
Generate, validate and view XRechnung and ZUGFeRD files per EN 16931, plus an obligation check — for the B2G/B2B e-invoicing mandate.
Company profile, customer database, products/services and backup — the foundation for all other business tools, plus payment transactions and reports coming soon.
Need professional IT support?
Our team can help if the free tool is not enough for your project.