About Renditra

Why this site exists

Most financial calculators available online return a gross figure and stop there. They ignore the fact that the same investment is subject to federal income brackets, standard deductions, and specific holding period rules under the Internal Revenue Code. Some calculators are simply out of date or apply generic formulas that do not match US banking and regulatory standards.

Renditra was built on a narrow premise: a calculator is only useful if it reflects the rules that actually apply to the person using it. Translating an interface into multiple languages does not achieve that. Rebuilding the calculation around statutory federal legislation and official economic data does.

The site launched in September 2026 and is being expanded one tool at a time.

Who is behind it

Renditra is operated by Meryem Bilge Seyhun as a sole proprietorship.

Content, calculation methods and technical development are handled by Ahmet Seyhun, a web developer and SEO specialist based in Istanbul who has been building and maintaining websites for over a decade.

The calculation logic and methodology are reviewed by Mehmet Dığış, a public finance graduate and self-employed accountant. His review covers the structure of the calculations and the internal consistency of the tax logic; the country-specific rates themselves are verified against official publications and statutory revenue procedures.

A point worth stating plainly: we are not financial advisers, certified financial planners (CFP), CPA tax accountants, or registered investment advisers. What we do is read the applicable legislation and official IRS procedures, implement them correctly in transparent client-side code, cite the sources directly, and state clearly what a given calculation does not cover.

How the site is funded

Renditra is funded by display advertising. We accept no commissions from banks, brokers, or financial product providers, and no financial product is ever recommended in exchange for payment.

This matters for an independent financial utility: our mathematical models are driven strictly by arithmetic and statutory formulas, not commercial kickbacks. If that policy ever changes, this page will disclose it openly.

Google AdSense and other advertising partners may serve cookies to deliver non-personalized or personalized ads in accordance with our Privacy Policy.

Corrections

If a figure appears inconsistent with recent statutory changes or IRS updates, please let us know. Email info@renditra.com with the specific tool URL and the parameters you entered. We review submissions against official statutes and publish corrections promptly.

Last updated: September 2026