The economics of one trade — pips, lots, leverage, costs
Every concept in this entire course is priced in dollars per pip. Learn the math once, and the rest of the year becomes arithmetic.
Last reviewed:
Trade economics in 90 seconds
Risk = lot × pip distance × pip value. Leverage changes only the margin you tie up, not the dollar move per pip.
- Pip value: on a 0.01 lot of EURUSD, 1 pip ≈ $0.10. On 0.10 lot ≈ $1. On 1.00 lot ≈ $10. JPY pairs have similar dollar values but pip = 0.01 (the second decimal).
- Leverage = margin required. 1:30 on EURUSD 0.01 lot needs ≈ $36 of margin. 1:500 needs ≈ $2.20. The lot size is the same; the locked capital changes.
- A trade's cost = spread (always) + commission (some brokers) + swap (per day held). For 0.01 lot EURUSD on a typical broker: ≈ $0.10 spread, ≈ $0 commission, ≈ −$0.03/day swap. Cheap to enter, cheap to hold.
- If you risk 1 % of $1,000 = $10 per trade, and your SL is 30 pips away on EURUSD, your max lot is $10 / (30 × $0.10) ≈ 0.033 lot. This math underpins everything in L9.
- Leverage doesn't change *risk per pip*, only the size of the position you're allowed to carry. The same SL distance still costs the same dollars.
If you want to see what leverage really feels like, pull up a EURUSD chart from 2022:
Fed/ECB policy divergence pushed the euro under 1.00 for the first time in 20 years — leverage felt very different that year.
SourceThree calculators — pip value, leverage / margin, cost per trade
All three use the same pair preset. Switch tabs to compute. Numbers approximated for clarity (cross-rate effects ignored on minor pairs).
Pip value scales linearly with lot. 0.10 lot = 10× the value of 0.01 lot.
How the money actually moves
Lot, pip, and pip value — the three numbers that drive everything
Lot is your position size. One *standard* lot = 100,000 units of the base currency. Mini = 10,000 (0.10). Micro = 1,000 (0.01). For a beginner, micro lots are where the muscle memory is built — they're small enough that the screen stays calm while you learn the moves.
Pip is the smallest standardised price step. On most pairs it's the fourth decimal (0.0001). On yen pairs it's the second decimal (0.01). Different decimal places, identical idea: 'the smallest unit price moves in'.
Pip value translates pips into the currency of your account. For a USD-denominated account on EURUSD, one pip on a 0.01 lot ≈ $0.10. On 0.10 lot ≈ $1. On 1.00 lot ≈ $10. Scale linearly. For other pairs (USDJPY, GBPUSD, AUDUSD…) the exact pip value drifts by a few cents per pip because cross-rates shift it — the calculator below handles that for you.
Leverage and margin — what the broker actually 'lends' you
Leverage is one of the most-talked-about and most-misunderstood concepts in retail forex. Here is the entire idea: to control a position of $X notional value, the broker requires you to post some fraction of $X as collateral. That fraction is the *margin*. Leverage is just 1 divided by that fraction. 1:30 leverage = 1/30 ≈ 3.33 % margin. 1:500 leverage = 1/500 = 0.2 % margin.
On a 0.01 lot of EURUSD (notional $1,087 at 1.0875), 1:30 leverage requires ≈ $36 of margin. 1:500 requires ≈ $2.20. Same position size. Same pip value. Same dollar move when price moves. The only thing that changes is how much of your account is *locked* while the trade is open.
Why this matters: when people say 'leverage is dangerous', they're usually confusing leverage with *position sizing*. Higher leverage doesn't make a pip cost more. It does, however, let you take much bigger positions with the same balance — which is where retail accounts blow up. The right discipline is: size positions for your account, regardless of what leverage the broker offers. We'll formalise that in Lesson 9.
Spread, commission, swap — the three costs you actually pay
Every trade has a cost. Three components dominate it:
**Spread**: the gap between bid and ask, paid implicitly when you enter. EURUSD spread on a regulated broker is typically 0.5–1.5 pips during liquid hours (~$0.05–$0.15 on 0.01 lot). Tighter spread = lower friction; widens during news and weekends.
**Commission**: some 'raw spread' or 'ECN' brokers charge a flat per-lot fee instead of (or in addition to) widening the spread. Typical: $3–$7 per round-trip per standard lot — i.e. $0.03–$0.07 per 0.01 lot per round-trip. You'll find this in the broker's terms.
**Swap (rollover)**: the interest-rate differential between the two currencies, applied to overnight positions. Positive if you hold the higher-yielding currency long, negative if short. On EURUSD with a regulated broker, swap is small (a few cents per day on 0.01 lot). On exotic pairs and during rate-spike periods it can be 5–10× larger. Most retail strategies don't engineer for swap — they just budget for it.
Stop-out — the one safety limit you don't choose
If your open positions lose enough that *free margin* (account equity minus locked margin) falls below a threshold, the broker forcibly closes positions to protect itself. That's the stop-out. On most regulated brokers, the stop-out happens at a margin level of 50 % (some 20 %, some 100 % — read your broker's docs).
Margin level = (equity / used margin) × 100 %. As losses mount, equity drops while used margin stays roughly constant — so the ratio falls. Once it hits the threshold, the broker auto-closes. This is a backstop, not a strategy: by the time stop-out hits, you've already lost more than you should have. The actual protection is your SL on every trade, sized so 'all my open trades hit SL simultaneously' is still survivable. Lesson 9 handles the math.
Key terms
When a generation learned what leverage means — EURUSD 2022
If you want to see what 'leverage with bad position sizing' looks like as a generation-defining chart, pull up EURUSD from January 2022 to October 2022.
Fed/ECB policy divergence pushed the euro under 1.00 for the first time in 20 years — leverage felt very different that year.
EURUSD spent 2022 collapsing from 1.15 to below parity (0.96 at the low) — roughly 1,900 pips. A retail trader long on 0.10 lot at 1.15 with a 30-pip SL and no risk discipline would have hit SL ten times and lost $300; the same trader with a 100-pip SL but oversized at 1.00 lot would have lost $19,000 on a single trade. Same pair, same year. The only difference was position sizing relative to the SL distance — which is the math you'll do for every trade from Lesson 9 onward. The takeaway isn't 'don't trade EURUSD'; it's 'leverage doesn't kill accounts — size relative to your stop does'.
SourcePractice — run the numbers on your own demo
10-minute practice — run the three calculators
Use the calculator above with values from a real (demo) setup. The point is muscle memory — by the end of this exercise the math should feel automatic.
- 1
Pick EURUSD. Compute pip value for 0.01, 0.05, and 0.10 lot. Notice how it scales linearly with lot size.
- 2
Switch to USDJPY. Same lot sizes, compute pip value. Notice how it differs from EURUSD by a few cents — that's the cross-rate effect.
- 3
Use the leverage calculator. Pick a $1,000 account, EURUSD, 0.01 lot, and slide leverage from 1:30 to 1:500. Watch only the margin number change — the per-pip dollar value stays the same. Internalise this.
- 4
Use the cost calculator. Plug in your demo broker's actual spread (Market Watch shows it live), commission (usually 0 for standard accounts, $3–7/lot for ECN), and swap (Tools → Symbols → click EURUSD → Specifications → Swap Long/Short). Total a 7-day hold. Most retail strategies eat 0.5–3 % of monthly P&L in costs.
- 5
Final exercise: $500 account, risk 1 % per trade, EURUSD setup with SL 20 pips away. What's the max lot? (Answer: $5 / (20 × $0.10) = 0.025; round to 0.02 for safety.)
Mastery check
Six questions on pips, leverage, costs, stop-out. Pass at 5 of 6.
Trade economics — quick check
Test your understanding with 6 questions. Pass with 5/6 correct.
Reflect
Reflection
Type your honest answers — saved on this device only. Use them next week to spot patterns in your trading thinking.
Pro deep dive — under the cost stack
If you came in already comfortable with the basics, here's what's underneath the calculators.
Pip value math — the cross-rate adjustment
Pip value in your account currency depends on the quote currency of the pair. For pairs quoted in USD (e.g. EURUSD, GBPUSD, AUDUSD), pip value on a 0.01 lot is approximately $0.10 — the math is straightforward (1,000 units × 0.0001 = $0.10). For pairs where USD is the base (USDJPY, USDCAD, USDCHF), pip value depends on the inverse: 1,000 × 0.0001 / quote-price. On USDJPY at 148.20, 1 pip on 0.01 lot = 1,000 × 0.01 / 148.20 ≈ $0.067. For cross pairs (EURJPY, GBPAUD), pip value depends on two cross-rates simultaneously. Every retail platform computes this for you on the fly; the calculator above approximates.
Why regulators cap leverage at 1:30 in some jurisdictions
ESMA (EU), FCA (UK), ASIC (Australia), and others cap retail leverage at 1:30 on majors (lower on exotics and crypto). The reasoning isn't 'leverage is intrinsically bad'; it's that retail traders consistently over-size relative to their stop discipline, and the regulator picked leverage as the easiest lever to dampen the resulting blowups. A 1:30 cap with no position-sizing discipline still produces losses; a 1:500 account with strict 1 % risk per trade is mechanically safer. The cap protects against the median retail behaviour, not the well-disciplined trader.
Swap mechanics — the carry trade undercurrent
Swap is the interest-rate differential between the two currencies in a pair, applied nightly to open positions. If you're long USDJPY when US rates are 5.25 % and JPY rates are 0.10 %, you receive a positive swap each day (≈ 5.15 % annualised on the notional, divided by 365, applied as a small daily credit). The full 'carry trade' strategy industrialised this: borrow yen, buy higher-yielding currencies, collect the differential. When the differential narrows or reverses suddenly, every long position simultaneously needs to unwind — exactly what happened on August 5, 2024 (see Lesson 3 story). For retail, swap is usually a rounding error; for institutional carry desks, it's the entire P&L.
Slippage and the fourth cost
Slippage isn't a fee but is a real cost on average. Market orders fill at the best available price, which can be a tick or two off the displayed price during normal trading and 5-20 pips off during news. SLs in fast markets slip the same way. On standard retail volumes (0.01 lot, major pair, liquid hours), slippage averages about a tenth of the spread. On high-impact news (NFP, CPI, central-bank decisions), it can be larger than the spread. Backtests that omit slippage routinely overstate strategy performance by 20-50 %; honest engineering models it.
Bibliography
Show answer
Dollar risk of a single trade equals lot size × SL distance in pips × pip value per lot, in your account currency. None of those three numbers depend on leverage. Leverage only changes the margin required to open the position — i.e. how much of your balance gets locked while the trade is open. Higher leverage means less margin used, which lets you hold more concurrent positions, but each pip still moves the account the same dollar amount. The discipline of position sizing relative to the SL distance is what controls account risk; leverage itself is just a sizing capacity, not a risk factor.
Educational material only — not investment advice. Trading carries risk of capital loss. Always practice on demo and use a stop-loss. ← Back to Forex Basics