Let's build something financial together.
Have a question about the Reverse Sales Tax Calculator or need a custom feature? Our expert team is standing by.
Contact Information
Fill out the form and our financial calculator team will get back to you within 24 hours.
Email Support
contactus@reversetax.cashluom.onlineFeature Requests
Missing a special JSON export or a specific state tax rule? Drop us a line.
About Our Support
Cashluom is a small, independent team of developers and finance enthusiasts who built the Reverse Sales Tax Calculator because we needed a fast, reliable way to extract pre-tax prices from receipts and invoices ourselves. After searching for existing solutions and finding nothing that was both accurate and free, we decided to build our own tool and make it available to everyone.
We are passionate about creating calculator tools that solve real problems for real people — whether you are a small business owner reconciling your quarterly sales tax, a freelance accountant processing client invoices, or an individual shopper who simply wants to know how much tax they paid on a purchase.
What We Can Help With
- Calculator questions: How to use the single-item or multi-item invoice mode, understanding your results, or interpreting the step-by-step breakdown
- Tax rate corrections: If you notice an incorrect state tax rate in our dropdown, please let us know the correct rate and your source so we can verify and update it
- Feature requests: We are actively developing new tools and welcome suggestions for new calculation types, export formats, or usability improvements
- Bug reports: If the calculator produces unexpected results, crashes, or displays incorrectly on your device, please describe what happened and we will investigate immediately
- Business inquiries: Partnership proposals, integration requests, or media inquiries about Cashluom
Response Time
We typically respond to all inquiries within 24 to 48 hours on business days (Monday through Friday). Complex feature requests or detailed bug reports may take slightly longer as we investigate thoroughly before responding. We read every single message personally — your feedback directly shapes how we improve our tools.
What We Cannot Help With
Cashluom is a calculator tool, not a tax advisory service. We cannot provide specific tax advice, help you file your taxes, or tell you which tax rates apply to your particular business or jurisdiction. For professional tax guidance, please consult a certified public accountant (CPA), enrolled agent, or your local state tax authority. Our full disclaimer provides more details about the limitations of our tools.
Frequently Asked Questions About Contacting Us
How long does it take to get a response?
We aim to respond within 24 to 48 hours on business days. If your inquiry involves a technical investigation, we may take up to 72 hours to provide a thorough answer.
Can you provide professional tax advice?
No. Cashluom provides calculator tools for informational purposes only. For specific tax advice, filings, or legal questions, please consult a certified public accountant (CPA) or your local tax authority.
How do I report a bug or incorrect tax rate?
Use the contact form above and describe what you expected versus what happened. Include the state, tax rate, and total price you entered. Screenshots are extremely helpful. We verify all reports within 24 hours and push fixes as quickly as possible.