Compounding Calculator for Trading

What is compounding in trading?

If you make 2% on 1,000, you earn 20. If you keep that 20 in the account, the next 2% is calculated on 1,020, so you earn 20.40. Over time these small extras add up. That is compounding.

In trading, compounding usually means your trade size follows your balance. If you always risk 2% of the current balance, your trades get a little bigger after wins and a little smaller after losses. This is much safer than increasing trade size after losses.

How to use the compounding calculator

1. Enter your starting balance.
2. Enter the gain per period in %. A period can be a day, a week or a trade — just stay consistent.
3. Enter the number of periods (up to 365).
4. Optional: enter a target balance to see the % per period you would need to reach it.
5. Read the final balance, the total gain and the table for each period.

Worked example

Start with 1,000. At 1% per day for 30 days you end at 1,347.85. At 2% per day you end at 1,811.36. At 5% per day the calculator shows 4,321.94 — but that is where you should be careful.

To double 1,000 in 30 days you need about 2.34% every single day, with no losing days. Very few traders can do that consistently. The calculator shows a warning when the rate per period is above 5%, because such rates usually need very large and risky trades.

Why compounding plans often fail

Compounding tables assume the same gain every period. Real trading has losing days. A single day of −20% after ten days of +2% (which took 1,000 to 1,218.99) brings you back below where you started. Big losses hurt compounding far more than small gains help it.

That is why the best compounding plans aim for a small, realistic rate and protect the balance with a daily loss limit.

Common mistakes

• Planning with 10–30% per day. The table looks exciting but the trades needed are extremely risky.
• Increasing trade size faster than the balance grows.
• Withdrawing nothing for months and then losing it all in one bad week.
• Ignoring losing days when making the plan.
• Using martingale and calling it compounding. They are opposites: compounding shrinks after a loss, martingale grows after a loss.

Compounding per day vs per trade

Some traders compound per trade: every trade is a fixed percentage of the balance at that moment. Others compound per day: they calculate one trade size in the morning from the starting balance of the day and keep it all day.

Per-trade compounding reacts faster, so a losing streak shrinks your trades quickly and protects the account. Per-day compounding is simpler to follow and avoids changing numbers after every trade. Both are fine as long as the percentage is small. What matters is that the size is always based on the balance you really have, never on the balance you hope to have.

To use this calculator for per-trade compounding, set the period to one trade and the gain per period to the average result of one trade. For example, risking 2% at an 80% payout with a 60% win rate gives an average of about 0.16% per trade — much smaller than most online compounding plans suggest.

How to compound safely

Risk a fixed 1–2% of the current balance per trade, set a daily loss limit, and aim for a modest target such as 1–3% per day or less. Recalculate your trade size at the start of each day, not after every emotion. Compounding works best when it is slow and boring.

Frequently asked questions

Learn more on the blog

Strategies · 22 September 2026 · 6 min read

How to Make a Compounding Plan for Binary Trading

A realistic binary compounding plan: trade size from your balance, a small daily target and a loss limit. Plus why 10%-a-day plans fail.

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