Methodology

We publish this page so anyone using a Settelo calculator can see exactly where the numbers come from and judge whether they want to trust the output.

Where the data comes from

Every number used in a calculator is sourced from an official publication — typically the relevant state Inspector General of Registration (IGR) portal, the state RERA authority, the Central Board of Direct Taxes (CBDT), the Reserve Bank of India, or a Union Budget notification. We do not scrape live data from these sites; we read them, encode the relevant numbers, and cite the source.

Every data record carries two fields:

• sourceUrl — the official page we read.
• lastVerifiedAt — the date a Settelo team member last opened that page and confirmed the number was current.

Our build process refuses to publish data older than 12 months without an explicit override, so stale numbers can't quietly persist.

How calculations are done

All calculators are rule-based and deterministic. Given the same inputs, they always produce the same output. There is no artificial intelligence interpreting your inputs and no probabilistic estimate — the math is auditable and reproducible.

Each formula is unit-tested. Where multiple sub-rules exist (for example, gender-based stamp-duty rebates or value-slab structures), the calculator picks the most-specific matching rule and shows you which one it used.

Where rates can vary in real life

Stamp duty, registration fee, and similar charges can vary by district, municipal area, property type, and even by the time of day a notification took effect. Our calculators use representative state-level rates that hold for the most common urban transaction. We flag rate ranges and add notes where local variation is material.

For high-value transactions or unusual property types (agricultural land, diverted plots, leasehold properties, farmhouse layouts), confirm the final number at your sub-registrar's office before paying.

What our calculators don't do

• They don't read or interpret your property documents.
• They don't tell you whether a property is safe to buy.
• They don't predict prices or recommend investments.
• They don't connect to government portals in real time.
• They don't substitute for an advocate, chartered accountant, or licensed valuer.

Spotted an error?

If you find a rate that doesn't match the source, please tell us at setteloinfo@gmail.com with the source URL and the discrepancy. Corrections are usually live within a working day.