Sirifin

Financial insights

Practical articles on budgeting, saving, investing, taxes and household business finance — written for Vietnam.

9 Principles of Personal Finance Management

To manage your personal finances effectively, you need to follow some basic principles To manage your personal finances effectively, you need to follow some basic principles: 1. Create a clear financial plan Before managing your finances, identify your current income and expenses. Daily income and expense tracking gives you an overview and makes it easier to make reasonable adjustments.

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Investing07/06/2026

Risk, Return, and Diversification — Three Pillars Every Investor Must Understand Before Investing

Why high returns always come with high risk, the three main types of risk you need to know, and how diversification helps reduce risk without sacrificing expected returns. There's a classic saying in the market: "There's no such thing as a free lunch." If someone promises you 20% annual returns that are "absolutely safe, guaranteed no loss," you're not looking at an opportunity — you're looking at a trap.

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Insurance07/06/2026

Health Insurance: How State Health Insurance Differs from Private Commercial Insurance, Do You Need Both?

Medical expenses are the leading cause of financial ruin. Understanding the roles of state health insurance and private commercial health insurance, and how to properly coordinate these two layers of protection. Among all types of insurance, this is the one you should prioritize first.

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Retirement07/06/2026

Why You Should Start Retirement Planning at 25, Even Though Retirement Is 35 Years Away

Retirement may seem distant when you're 25, but that's exactly why you should start now. Why time is your most valuable asset in the retirement equation, and the cost of delaying. At age 25, "retirement" sounds like something for a stranger three decades from now. But here's the paradox of retirement planning: the moment it feels least urgent is exactly when starting has the most value.

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Tax07/06/2026

Investment Taxes: How Are Securities, Dividends, and Deposit Interest Taxed?

Do you have to pay taxes on investment gains? How personal income tax applies to securities transfers, dividends, and bank deposit interest — plus common misconceptions among investors. When you start investing, one question often gets forgotten until... you receive your statement: "Do I have to pay taxes on investment gains, and how much?" The answer varies by asset type — and there are a few surprises for beginners.

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Real estate07/06/2026

Real Estate Legalities: Red Book/Pink Book, Contracts, and Taxes & Fees When Buying or Selling Property

Understanding property certificates, what to check in contracts, and all taxes and fees in property transfers — including updates on tax exemptions for sole residences from 2026. In real estate transactions, what costs people the most money isn't the price itself, but legal issues. A fake certificate, a loophole in the contract, or misunderstanding tax obligations can turn a billion-dong transaction into a disaster.

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Household Business Tax 2026: flat tax eliminated, switching to self-declaration — what you need to know?

From 1/1/2026, flat tax is eliminated and household businesses will self-declare based on actual revenue. New taxable threshold, revenue-based grouping, and two methods for calculating personal income tax you need to understand.

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Debt management07/06/2026

Credit cards: use wisely as a tool, use wrongly as an interest trap

Credit cards can be a useful financial tool or a high-interest debt trap, depending on how you use them. How to leverage benefits, understand interest-free periods, and avoid the most costly mistakes. Credit cards are one of the most misunderstood financial products: some see them as "their own money," others fear them like avoiding evil.

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