Disclaimer
Last updated: June 7, 2026
Please read this disclaimer carefully before using CostNest calculators. By using any tool on this site, you acknowledge that you have read and understood this disclaimer. For complete legal terms, see our Terms of Service.
1. Informational Use Only
CostNest calculators provide estimates for planning and educational purposes only. They are not a substitute for advice from a qualified accountant, tax advisor, engineer, lawyer, healthcare provider, or any other licensed professional. Do not make significant financial, legal, medical, or construction decisions based solely on calculator outputs.
2. Rate and Formula Accuracy
We strive to keep Bangladesh-specific rates (BPDB electricity tariffs, NBR tax slabs, construction benchmarks, BAJUS gold prices, and other published figures) up to date. However, government rates and market prices change without notice. Always verify critical figures directly with the relevant official source — Bangladesh National Board of Revenue (NBR), BPDB, Bangladesh Bank, BNBC, or equivalent authority — before making any decision.
3. No Warranty — Results Are Programmatic Simulations Only
All tools on CostNest are provided 'as is' without warranties of any kind, express or implied. Mathematical outputs produced by CostNest calculators are programmatic simulations generated from user-supplied inputs. They must not be treated as professional legal, financial, tax, accounting, medical, structural engineering, or any other regulated professional advice. CostNest makes no representation that results are complete, accurate, or suitable for your specific situation. Results must be independently verified against official sources and current regulations before being acted upon. Full warranty terms are set out in our Terms of Service.
4. Professional Sectors Requiring Extra Care
Certain calculators — including Income Tax, Zakat, EMI/Loan, Solar ROI, and Building Construction — deal with topics where errors carry real financial or legal consequences. These calculators are provided for orientation and rough planning only. Consult a Chartered Accountant (CA), Islamic finance scholar, licensed engineer, or financial advisor before acting on any result from these tools.
5. Third-Party Services
CostNest uses Google AdSense for advertising, Google Analytics for site performance analysis, Vercel Analytics for Core Web Vitals, and Formspree for contact form submissions. Each of these services operates under its own privacy policy. See our Privacy Policy for full details on how data is handled and your opt-out options.
6. External Links
Reference links on CostNest (to government websites, official rate sources, and scholarly references) are provided for convenience only. CostNest does not control, maintain, or endorse the content of external sites. We cannot guarantee that external links remain active or accurate.
7. Limitation of Liability
To the maximum extent permitted by applicable law, CostNest and its operators shall not be liable for any direct, indirect, incidental, consequential, or punitive damages arising from your use of, or reliance on, any calculator or content on this site. By using CostNest, you agree to this limitation. See our Terms of Service for complete liability terms.