Canadian GST, HST, PST and QST Explained
Canadian sales tax depends on the province, the type of purchase, and whether GST, HST, PST or QST applies.
Genius Logics Blog
Practical guides, calculators, tutorials, and examples for using free online tools in real work, study, finance, writing, and everyday problem solving.
Written and reviewed by Kashif Naseem. Kashif Naseem is a full-stack developer with 26+ years of experience building web applications, automation tools, calculators, and business systems. He works with Astro, Laravel, PHP, JavaScript, React, AWS, and AI integrations.
Complete Canadian Mortgage Guide: Payments, Interest, Amortization, and Extra Payments
Canadian mortgages involve more than a monthly payment. Down payment, amortization, term, interest rate, renewal timing, payment frequency, and extra payments all shape the real cost.
How to Generate QR Codes for WiFi, URLs, and Print Materials
Generate QR codes for WiFi sharing, URLs, and print with the Genius Logics QR Generator. Practical tips for placement, sizing, and scan reliability.
How Extra Mortgage Payments Reduce Interest
Extra mortgage payments can reduce interest because they lower the principal sooner. The earlier the extra payment happens, the more future interest it can affect.
How to Calculate Percentage Increase and Decrease
Percentage change compares the difference between two values against the original value. The starting value matters.
Color Picker Guide for Designers and Developers
Good color work is more than choosing a nice shade. You also need usable formats, contrast, consistency, and implementation-friendly values.
Compound Interest Explained with Real Examples
Compound interest means earnings can earn more earnings over time. Time, contribution habits, and realistic assumptions matter more than a perfect prediction.
How to Format JSON Properly and Avoid Common Validation Errors
JSON is strict: quotes, commas, brackets, escaping, and data types all matter. A formatter and validator make problems easier to find before they reach production.
How QR Codes Work and When to Use Them
QR codes turn text or links into a scannable square, but good QR codes need clear destinations, enough contrast, and room to breathe.