Currency conversion for tax returns — free calculator
Converts a foreign amount on the basis your return requires and shows the difference between a spot rate and an average rate.
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Converts a foreign amount on the basis your return requires and shows the difference between a spot rate and an average rate.
Enter your figures
An estimate for planning only. Rates and thresholds used here are the assumptions stated on this page; we confirm every figure against the issuing authority for your own tax year before anything is filed.
How the estimate is built
Conversion basis is a real source of assessment adjustments. Capital transactions generally use the rate on the transaction date, recurring income may be converted at an annual average where the rules permit, and the cost base of an asset is fixed at the rate on acquisition rather than restated later. Whichever basis applies, record the rate and its source at the time.
Where to go from here
A calculator narrows the range; it does not settle a filing. We would rather scope it properly than quote it quickly.
Reviewed for accuracy for the 2025 and 2026 filing seasons by Udit Gupta, Cross-Border Tax Expert, Legal Quotient Consultants. This is general information rather than advice about your file — a short call is the way to get the second.
Foreign tax credit calculator — what this page covers
Read this page for foreign tax credit calculator. It works through currency conversion for tax returns from the beginning — whether it applies to you at all, what has to be filed if it does, and what the engagement costs, priced up front.
The difference a dedicated cross-border team makes
Cross-border is the whole practice
International and cross-border tax is all we do — not a sideline next to domestic work. The edge cases on this page are our ordinary Tuesday.
Residence is tested, not assumed
Where you are resident for treaty purposes is a question with a method. We work through it and write down the answer, with the facts it rests on.
One team, not two firms billing separately
You are not the go-between for two sets of advisers with two sets of assumptions. One engagement covers each country the file touches.
We say early if it is not our work
If a file needs something this practice does not do, you hear that at the start rather than after a bill.
Cross-border tax case studies
Rebuilding a conversion basis for foreign salary after a reassessment
An employee had converted a full year of foreign salary once, at the rate in force when the return was prepared. The assessment adjusted the income and the client asked us to respond. We obtained the payroll records, converted each pay period at the rate for its own date, and set the result out as a schedule with the rate source shown line by line. The engagement produced a reconciled income figure and a written explanation of the basis, which was filed as the response to the adjustment.
Correcting a cost base that had been converted at the sale-year rate
A client reported the sale of a foreign flat by converting both the purchase price and the proceeds at the rate on the day of the sale. In local currency the gain looked small. We went back to the completion papers, fixed the cost in the reporting currency at the acquisition-day rate, and left the proceeds at the sale-day rate. The work produced a revised gain computation and a note explaining why part of the reported gain was currency movement rather than a rise in the property's value.
One conversion basis for a rental portfolio across several reporting years
Rents from two foreign properties had been converted differently in each year of a multi-year filing, depending on who prepared the return. We established which basis the rules permitted for recurring rental receipts, applied it uniformly, and left the capital items on their transaction-date rates. The engagement produced a single documented basis, a restated set of rental figures for every year in the filing, and a short memorandum the client can hand to any adviser who takes the file on later.
Choosing between spot and average rates for a dividend stream
A shareholder received dividends from a foreign company at irregular intervals and wanted to know whether an annual average was open to them. We read the conversion rules that applied to that income type, compared what each basis produced from the actual payment dates, and set out the conditions attached to using an average. The client chose the transaction-date basis for reasons of evidence rather than result. The engagement produced a documented election, a conversion schedule, and a record of the rate source for each payment.
Answering a query about where the rates in a return came from
A filed return was queried, not on its figures but on their provenance: the file held converted amounts and nothing behind them. We identified the source used for each class of item, reproduced the rate for every transaction date from that source, and matched each converted figure back to the original foreign statement. The engagement produced a full audit trail from foreign document to reported amount, which closed the query without any change to the amounts originally reported.
Converting a share disposal where purchase and sale sat years apart
Shares bought while the client was paid in one currency were sold after a move, with the brokerage reporting only in the foreign currency. The broker's own gain figure reflected no currency effect at all. We converted the acquisition at its own date, the disposal at the date of sale, and treated any interim commissions on their own dates. The work produced a gain computation in the reporting currency, with a reconciliation showing why it differed from the figure printed on the brokerage statement.
Deemed Resident or Factual Resident — Not the Same File
The two statuses attract different returns, different credits and different provincial treatment, and the label is decided by facts rather than chosen. Establishing which applies is the work; the filing follows from it without argument.
Read how this one runsMoving Money Out of India and the Certificates It Needs
A remittance out of India needs its tax position certified before the bank will process it. The file establishes the character of the funds, produces the certification, and keeps the position consistent with the returns already filed.
Read how this one runsAll case studies — every published engagement in one place.
Core International & Cross-Border Tax Services
International Tax Planning & Advisory
Strategy and compliance for income, assets and families spread across borders.
U.S. & Cross-Border Tax Returns
Expat & Emigration Tax
Non-Resident Canadian Tax
Transfer Pricing & BEPS
Tax Treaties & Withholding
Cross-Border Estates & Trusts
Global Investments & Reporting
Cross-Border Corporate Tax
India Tax for NRIs & Returning Residents
Canadian Tax with a Foreign Element
UAE Tax for Expats & Their Home Country
Industries & Client Types We Serve Worldwide
Global E-commerce & Marketplaces
- Foreign VAT / GST / sales tax registrations
- Marketplace withholding reviews
- Inventory nexus & PE analysis
- Multi-currency books reconciled
Technology & SaaS
- Cross-border revenue sourcing & withholding
- IP structuring with real substance
- Equity for cross-border teams
- U.S. expansion: entity & PE setup
Professional Services Firms
- Reg 105 / 102 waivers
- Permanent establishment risk
- Partner mobility planning
- Cross-border withholding recovery
Cross-Border Real Estate
- Section 216 rental returns
- FIRPTA withholding recovery
- Section 116 clearance
- Treaty credit optimization
Importers, Exporters & Manufacturers
Related-party purchasing, customs value versus transfer price, and foreign-affiliate structures put trading businesses inside the s.247 documentation rules.
Goods crossing a border move the tax question from income to indirect: registration thresholds, place of supply, the customs value and the transfer price between related entities all have to agree with each other. When they do not, the adjustment arrives from two authorities at once and each one uses the other's number.
- Transfer pricing documentation (s.247)
- Customs value vs transfer price
- Foreign affiliate reporting (T1134)
- Country-by-country reporting
Athletes, Artists & Entertainers
- Reg 105 & U.S. CWA agreements
- Multi-state & country calendars
- Touring income allocation
- Royalty & image-rights withholding
Remote Workers & Digital Nomads
- Residency analysis before moving
- Employer payroll exposure
- Totalization & social security
- Foreign tax credits
Investment Funds & Holding Companies
- Treaty access & PPT reviews
- FAPI & surplus computations
- Withholding-efficient routing
- Governance & substance
