Guides
Practical guides to money, global business and the technology behind them.
Where to Register an Online Business
Compare activity, residence, banking and annual costs before choosing a company jurisdiction.
USDT vs USDC: What You Actually Hold
Separate issuer backing, custody, networks and your route back to spendable money.
Build an Invoice Review Workflow with AI
Use synthetic invoices to separate extraction, validation, review and payment approval.
Seychelles, BVI and Belize: Owning an Offshore Company
What to check about agents, ownership records, accounting and banking before incorporating.
How to Use AI for Financial Research
Build a source ledger, verify citations and recalculate figures before relying on an AI answer.
Before You Buy Crypto: Custody, Liquidity and Risk
Map custody, selling and withdrawal risks before putting money into crypto.
Bank Accounts, E-Money Accounts and Wallets
Identify the provider, product and protections behind the balance in an app.
The True Cost of an International Transfer
Compare the full sender debit with usable recipient proceeds, including rates and fees.
Profit vs Cash Flow: Why Growing Businesses Run Short
See how profitable work creates a cash gap, then build a weekly forecast.
Currency Risk When You Earn and Spend Abroad
Map currency mismatches by amount and date before choosing how to manage them.
A Practical Security Setup for Your Money and Accounts
Secure email, sign-in and recovery, then rehearse how you would cope without your phone.
How to Choose Finance Software You Can Leave Later
Test exports, attachments and payment relationships before committing to finance software.
AI Memory: Decide What Your Assistant Should Keep
Keep useful facts, remove stale instructions and test what an assistant remembers.
Leveraged ETFs: Why Daily Returns Do Not Add Up
Work through two market paths before treating a daily multiplier as a long-term promise.
Stablecoin Redemption: Read the Exit Terms
A market price near one dollar does not explain how you can redeem the token.
Software Supplier Checks Before You Connect Data
Assess a service's access, ownership, dependencies and recovery before connecting business data.
Secure Messaging: Protect the Recovery Keys
Encryption cannot protect a chat history handed over through a stolen recovery key.
UK Company Accounts: Prepare for April 2028
Plan for software filing and separate filing a profit and loss account from publishing it.
Project Agora: What Atomic Payments Actually Solve
Follow a cross-border payment through an all-or-nothing settlement design.
Tokenised Money Market Funds: Read the Claim
An on-chain fund share still depends on assets, dealing rules and redemption routes.
Bond Duration: Why Safe Debt Can Lose Value
Separate repayment risk from price risk before buying bonds for a future bill.
AI Workflow Costs: Price a Completed Task
Count review, retries and mistakes alongside model charges.
Passkeys: Plan Recovery Before Losing Your Phone
Choose a passkey setup that survives a lost device and closes weak recovery routes.
Estonian E-Residency and Tax: Four Separate Questions
Separate digital identity, company residence, work location and personal tax obligations.
Choose a subject below or begin with a question you need to answer. Our longreads combine plain explanations with worked examples, comparisons and checklists. Source links let you inspect material claims, while fictional calculations and synthetic documents are labelled so they cannot be mistaken for live prices or customer results.
The collection covers crypto custody and stablecoins, cash flow and currency risk, payment costs and account types, company jurisdictions, AI research and invoice workflows, account security and software portability. Each guide states its scope and source-review date.
If you are unsure where to begin, Start Here groups the guides into four reading paths. Read About SGK Academy for our approach to evidence, editorial pen names and illustrations.