Knowledge Center

Learn how to think with money, AI, and code.

Every article is written or curated by the Elevatools team. Clear, opinionated, and free.

Finance

How AI analyzes your bank statement (and what it can’t see)

A behind-the-scenes look at how modern LLMs read bank statements, what insights they extract, and where you should still rely on a human.

3 min2026-01-15
Finance

Complete guide to GST returns in India (2026)

GSTR-1, GSTR-3B, GSTR-9 — what they are, who needs to file, deadlines, and common filing mistakes.

3 min2026-01-15
Finance

Decoding your salary slip: every line explained

Basic, HRA, LTA, PF, Professional Tax, TDS, gratuity — a complete walkthrough of every line on your payslip.

3 min2026-01-15
Business

What is a balance sheet? A 5-minute explainer

Assets = Liabilities + Equity. The fundamental accounting identity that powers every public company analysis.

3 min2026-01-15
Finance

How retirement planning actually works (the simple version)

Three numbers decide your retirement: target corpus, time horizon, and expected return. Here’s how to estimate each.

3 min2026-01-15
Finance

Property valuation: 5 methods you can use today

Comparable sales, income capitalization, replacement cost, DCF, and “gut feel” — when each method works best.

3 min2026-01-15
Finance

How credit cards actually work (and how to never pay interest)

Statement cycle, due date, grace period, interest calculation, and the simple habits that turn cards into pure rewards engines.

3 min2026-01-15
Business

Startup valuation: the methods VCs actually use

From the VC method to ARR multiples — a practical guide for founders and angels.

3 min2026-01-15
Career

Resume optimization in 2026 (ATS, AI, and recruiters)

How modern resumes get filtered, what to put first, and the 5 changes that double interview rates.

3 min2026-01-15
AI

How AI document analysis actually works

OCR, embeddings, retrieval, structured extraction — a peek inside the pipeline that reads PDFs.

3 min2026-01-15
Documents

PDF compression: how it works and when to use it

Why your 30MB PDF becomes 3MB without losing readability.

3 min2026-01-15
Developer

Regex for beginners: the only 10 patterns you need

Match emails, phone numbers, dates, URLs, and 6 more common patterns — with explanations you’ll remember.

3 min2026-01-15
AI

GPT vs Claude vs Gemini: which to use when (2026)

Strengths, weaknesses, and the task-by-task winners.

3 min2026-01-15
Technology

Website SEO checklist for 2026 (with Core Web Vitals)

Title tags, meta descriptions, schema, sitemaps, internal links, page speed, mobile usability — the complete 25-item list.

3 min2026-01-15
Business

10 contract red flags every freelancer should know

Indemnity, IP ownership, payment terms, non-competes — the clauses that bite you 6 months later.

3 min2026-01-15
Finance

7 ITR filing mistakes that trigger a tax notice

The most common reasons Indian taxpayers receive notices — and how to avoid them.

3 min2026-01-15
Finance

How much emergency fund do you really need?

3 months, 6 months, or 12 months — the right answer depends on 5 variables.

3 min2026-01-15
Finance

SIP vs Lumpsum: which actually wins over 20 years?

The math nobody tells you — and why discipline beats timing.

3 min2026-01-15
Finance

Home loan tax benefits in India (Section 24 + 80C)

How to extract every rupee of tax benefit from your home loan.

3 min2026-01-15
Finance

Active mutual funds vs index funds: the 2026 verdict

Why 80% of active funds underperform their index, and when active still wins.

3 min2026-01-15
Finance

CIBIL score explained: what it is, how it’s built, how to fix it

The 300–900 number that decides your loans — demystified.

3 min2026-01-15
Finance

80C tax savings: ranking every option

PPF, ELSS, NPS, EPF, life insurance, ULIPs — ranked by post-tax return and lock-in.

3 min2026-01-15
Business

Side-hustle income tax: GST, ITR, advance tax

When to register for GST, how to file ITR-3, and the 4 advance-tax dates that matter.

3 min2026-01-15
Business

How Stripe (and other payment gateways) actually charge you

The fee structure most founders never read carefully — and how to negotiate.

3 min2026-01-15
Business

How to read a P/E ratio properly

Why a “P/E of 30” is meaningless without context — and the 4 numbers to compare against.

3 min2026-01-15
Productivity

Productivity without burnout: 5 habits that survive years

Forget the 4 AM hustle. The systems that actually compound.

3 min2026-01-15
AI

How to write a great AI prompt (a 7-rule cheat sheet)

Structure beats length. Examples beat description. Constraints beat freedom.

3 min2026-01-15
Developer

Why a good JSON formatter saves you 10 hours a month

Pretty-print, lint, jq queries, type inference — the developer tooling you should be using.

3 min2026-01-15
AI

How LLMs work — a non-PhD explainer

Tokens, embeddings, attention, transformers — explained with 0 math.

3 min2026-01-15
Business

The 30-item SaaS launch checklist

Domain, payments, support, analytics, SEO, legal — every box to check before launch.

3 min2026-01-15
Business

Picking a domain name: the 5 rules pros follow

Brandable > descriptive. .com > everything else. Short > long.

3 min2026-01-15
Developer

CORS, finally explained

Why your fetch fails, and the headers that make it work.

3 min2026-01-15