Contact the maintainer
You can reach the maintainer through the existing Upwork profile linked from the service below. An Upwork account may be required to message. You do not need to purchase the service to report a problem.
Open the maintainer’s Upwork service ↗
What to include
- The calculator you used and your browser.
- Synthetic input amounts that reproduce the issue.
- The result you expected and the result shown.
Do not include customer names, addresses, invoices or private project documents. The calculators do not need those details.
There is no support response-time guarantee. For a pricing or accounting decision, confirm your interpretation with someone qualified to advise on your own circumstances.