Editorial comparison
Foreign-currency portfolio costs: IBKR, Saxo and Schwab
Calculate orders, conversion, custody and exit separately: monthly funding, conversion minimums, holding-day charges and currency risk.

IBKR, Saxo and Schwab: defining foreign-currency portfolio cost
Foreign-currency portfolio cost comprises components applying to your workflow: funding, conversion, security orders, holding, services and exit. IBKR, Saxo and Schwab publish different conditions for these components. There is no single broker-cost number, and zero purchase commission is not zero portfolio cost. Compare the same securities, amounts, dates and execution channels.
A useful framework adds funding and conversion charges, transaction commissions, time-based holding charges, services and exit costs. This is accounting rather than a return model. Personal taxes and changes in security value should be considered separately instead of disappearing into a commission line.
At IBKR, manual versus automatic conversion changes the calculation. At Saxo, identify location, tier and lending before calculating custody. At Schwab International, identify security, channel and funding route without extending zero online-stock commission to other activities.
Create columns for components, units and applicability. A component not established for the account and transaction cannot become zero simply to complete a total. Calculate a limited subtotal of established components and specify its contents. That separation remains useful before a complete quote is available because it prevents comparisons of unlike activities.
IBKR, Saxo and Schwab: separating three currency roles
Funding, settlement and reporting currencies can differ. Someone can send one currency, buy a security in another and view total value in a third. Displayed value does not necessarily represent a completed conversion. A screenshot of the total is therefore insufficient for currency costing.
At IBKR, inspect actual cash balances and conversion activity. At Saxo, identify the currency settling the payment and appropriate account terms. At Schwab International, establish the foreign-currency or dollar wire route. One service's funding mechanism is not automatically equivalent to another's currency order.
Cost is more than a difference between two internet quotations. A reference rate needs the same time and transaction direction, and separate commissions must be added without double counting a rate adjustment. Sending or intermediary-bank fees are another component; reconcile amounts sent and received too.
Currency risk itself is not a fee. Even without fresh conversion during holding, reporting-currency value can change with exchange rates. Separating completed conversions from currency exposure explains why lower cost does not protect returns. The overseas stock-buying guide covers the purchase sequence; this calculation concentrates on which cash movements actually generated charges.
IBKR, Saxo and Schwab: known components without invented zeros
The table separates documented pricing components. It is not a total-cost table or a substitute for account terms. Every number accompanies its service rather than representing universal brand pricing.
Scroll the table horizontally to read every column.
| Component | IBKR | Saxo | Schwab International |
|---|---|---|---|
| Described conversion | First Spot tier: 0.20 basis point and USD 2 minimum; automatic under separate terms | 0.25% in the international conversion schedule | Foreign-currency funding service with a transaction-specific rate |
| Selecting security commission | Exchange, Pro Fixed or Tiered, and order type | Exchange, tier and account terms | Listed security, UCITS, online or assisted channel |
| Holding factor to assess | Account terms and selected services | Location, tier, lending and applicable daily charges | Account, security and selected service conditions |
IBKR Pro Fixed for whole American shares has USD 0.005/share base pricing, a USD 1 minimum and a 1% trade-value cap. Schwab's online zero for listed securities does not automatically cover assisted UCITS, listed at USD 50 per transaction.
Fill activity rows from the appropriate schedule for the defined portfolio. Do not apply Saxo custody to an unassessed location as certain, or call Schwab conversion free because of transfer-fee wording. State the assessment route rather than inventing a figure; obtain the precise condition instead of deciding from an apparently complete but unsupported table.
IBKR: annual monthly-conversion and order scenario
Assume 12 hypothetical monthly conversions worth USD 2,000 each and 12 whole US-share Pro Fixed orders, each charged a USD 1 base minimum. For first-tier manual conversion, the percentage charge falls below the minimum, making each conversion USD 2. The annual limited subtotal is USD 36: 12 multiplied by USD 3.
If the same conversions instead use applicable automatic service with a typical 0.03% rate adjustment, each currency component is USD 0.60. Adding the same stock minimum produces USD 19.20: 12 multiplied by USD 1.60. This hypothetical assumes the service applies; it does not promise the same mechanism for every account.
Both amounts include only conversion and order-base components. Regulatory charges, market spreads, data, banks and exceptions are excluded. The orders are neither fractional instructions nor Lite pricing. Another plan requires recalculation rather than copying the result.
The example explains why conversion frequency and minimums matter. Combining conversions can change cost but also currency timing and balances. It does not recommend delaying investment or holding currency for commission savings. Define the workflow first and price it afterwards instead of changing the plan without understanding added exposure.
Saxo: cumulative contributions and changing custody value
For the same hypothetical 12 conversions worth USD 2,000 each, Saxo's 0.25% rate, if applicable, produces USD 60 in annual currency components. Custody needs another base: holdings over time. Do not multiply all contributions by an annual percentage as though every deposit remained invested all year.
Assume an educational model of 12 equal 30-day periods. USD 2,000 is invested at each period's start and prices remain constant, producing values from USD 2,000 to USD 24,000. The mean of the 12 values is USD 13,000. With an assumed 360-day denominator and an applicable Other countries Classic rate of 0.15% without lending, model custody is USD 19.50 before taxes.
Adding currency and custody gives a limited USD 79.50 subtotal. Stock commissions and other charges are excluded, so it cannot be labelled Saxo's total or compared with another provider's complete cost. The 360-day model is not an actual calendar or charged account; it illustrates the method with disclosed assumptions.
Actual daily values, value dates, security, entity and waivers change the result. Omit custody when it does not apply. Assess lending separately when a waiver depends on it. The IBKR versus Saxo comparison expands conversion and lending conditions beyond one multiplication.
Schwab: why a total needs a funding route
At Schwab International, an appropriate listed security purchased online can have USD 0 base commission. That is a clear fact for one component. Pricing the same foreign-funded portfolio also requires deposit route, conversion rate and applicable bank or service charges. Without those conditions, other worksheet components cannot be set to zero.
For UCITS executed through a representative under the described route, USD 50 per transaction replaces the ordinary zero line. Assisted listed stocks show USD 25. The same order count can therefore produce different results solely through product and channel.
Do not import Schwab Global or bank-account terms into Schwab One International. Related services can meet other needs, but portfolio comparison must identify the product holding and settling the securities. Zero opening minimum also says nothing about every later charge or permission.
For the monthly plan, record established stock commission and assess funding before calculating the subtotal. This improves precision rather than indicating a service weakness. Sending existing dollars differs from other-currency funding. The Saxo versus Schwab comparison explains funding versus trade conversion without promising acceptance in every country or a personal currency quote.
IBKR, Saxo and Schwab: sales and withdrawals complete the calculation
A cost plan omitting exit can mislead. Selling securities, converting receipts and sending funds to a bank are separate activities. Exit conversion need not use the entry amount because value and balances changed. Do not automatically charge the same amount twice merely to simplify the number.
Consider a hypothetical Saxo example: entry conversion worth USD 10,000 and exit conversion worth USD 9,000, each at an applicable 0.25%. Components are USD 25 and USD 22.50, totalling USD 47.50. No actual security price or cause of the value difference is asserted; it checks arithmetic with two different bases.
In-kind transfer can create another sequence. Saxo identifies stock-transfer exit charges, and Schwab's nontransferable fractions require sale. At IBKR, assess the currency route and receiving account. One exit price cannot apply to every portfolio.
Keep records reconciling units and cash, including payments arriving after a move. Separate sold holdings from transferred ones in the worksheet. Once funds reach the bank, compare amount and currency with confirmations. Measure the complete route without counting a charge twice or leaving another stage outside the calculation.
IBKR, Saxo and Schwab: conversion cost is not currency risk
Conversion cost comes from an activity or service term. Currency risk comes from changes in investment-currency value against the currency measuring the outcome. Both can exist even without immediately converting cash back. Changing displayed portfolio currency does not necessarily change instrument exposure.
For illustration only, assume a security gains 5% in its trading currency while that currency's value in the reporting currency falls 10%. With no fees, taxes or distributions, the factors are 1.05 and 0.90. Their product is 0.945, a negative 5.5% reporting-currency change. Simply adding 5% and negative 10% is not exact.
This predicts neither exchange rates nor securities. It demonstrates that a small broker-fee difference does not remove economic exposure. A dollar-traded security can also contain assets and operations in other currencies; trading currency does not fully describe portfolio currency risk.
Keep cost worksheets separate from return scenarios. Calculate provider charges without assuming market outcomes. For currency sensitivity, disclose assumptions beside hypothetical results. Commission savings should not be presented as capital protection or a reason to choose a security. Portfolio value can decline under all three alternatives even when service components are well understood.
IBKR, Saxo and Schwab: an updateable decision worksheet
Keep assumptions beside numbers: security, exchange, account, plan, amount, frequency and currency. Custody rows add value over time, day-count convention and waiver conditions. Conversion rows identify manual, automatic or funding service. One changed condition can then be updated without rewriting the whole comparison.
Revisit the worksheet when the plan changes. More orders affect cost differently from greater holdings. Residence changes can alter account and entity, while another security can move activity to a different pricing line. A new broker is not required for every change, but prior terms need reassessment.
Obtain a material missing price before deciding. Limited subtotals explain scale but cannot establish an overall winner when they include different components. Simpler administration can also matter when described as a preference rather than an unperformed performance measurement.
IBKR requires attention to plan and currency mechanism; Saxo to custody and entity; Schwab International to security, channel and funding. These are assessment points, not quality labels. A useful comparison supplies activities and charges confirmable for an appropriate account. Approval, investment selection, personal tax and market outcomes remain outside service-provider costing.



