How Much Should You DCA per Month? Finding the Right Amount for Your Income

The question beginners ask most is “how much do I need to DCA to get rich?” — and honestly, that’s the wrong question. The right one is “how much can I lose without it hurting my life?” Nobody can guarantee the market goes up, but you have full control over how much you risk. This article walks through that number step by step.

The cold-money rule: the one rule you never break

Money you DCA into crypto must be cold money— money you have no plans to touch for years. Not next month’s rent, not your emergency fund, and never money you borrowed to invest. Crypto has dropped more than 50% multiple times in the past. If losing half of this money would disrupt your life, it was too much to begin with.

Think in terms of income, not a random number

A common conservative guideline for high-risk assets is to use only a small slice of your savings — for example, around 5-10% of what you manage to save each month. (This is a widely used rule of thumb, not personal advice.) Work through it in this order:

• Monthly income — start from what actually hits your account.
• Subtract essential expenses — rent, food, transport, debt payments.
• What remains is your savings — the amount you truly keep each month.
• Carve out a small slice for crypto — say 5-10% of those savings, with the rest going somewhere safer.

Don’t forget minimum fees

If your budget is small and you buy tiny amounts too often — say 100 baht every week — minimum fees eat a visible percentage of every purchase. The easy fix is to buy once a month instead of weekly: the smaller your budget, the fewer and larger your buys should be. For picking a cheap exchange and trading pair, see the cheapest crypto fees in Thailand.

Examples by income level (purely hypothetical)

The numbers below are hypothetical examples to make the idea concrete — not a fixed formula, and no outcome is promised:

• 15,000 baht salary — if you save around 1,500 baht/month, a comfortable DCA budget might be roughly 100-200 baht/month.
• 25,000 baht salary — if you save around 4,000 baht/month, a DCA budget might be roughly 200-400 baht/month.
• 40,000 baht salary — if you save around 8,000 baht/month, a DCA budget might be roughly 400-800 baht/month.

If these look “too small” — that’s the point. The right amount is the one that lets you sleep through a crash and keep buying on schedule.

Start small, then adjust

A trick that actually works: start smaller than you think you should. If you follow the plan comfortably for 3-6 straight months, increase it a little. This way you experience real volatility before raising the stakes. See how DCA-ing 1,000 baht a month played out historically — or if you’ve never bought crypto at all, start with starting crypto with 1,000 baht.

Simulate before you commit

Before sending real money, plug your number into the DCA backtest simulator, which uses real CoinGecko price data, and see what that monthly budget would have looked like through past ups and downs. Then read more about long-term planning in the DCA Bitcoin strategy.

⚠️ For education only — not investment advice. Crypto is high risk; only invest what you can afford to lose.