During an exchange semester, income and spending may be denominated in different currencies. A budget converted once at a favourable exchange rate can then appear to have more room than will actually be available. The important distinction is between payments already fixed in your funding currency and payments that still need conversion later.
Retain the original currency
Record overseas rent first in the currency used in the tenancy agreement. Beside it, note the planning exchange rate, the date of the calculation and the resulting euro amount. This makes clear which part of the cost is unchanged and which changes solely because of conversion. Do not silently carry an old euro estimate into a new plan.
Treat income in the same way. If support arrives in euros while accommodation must be paid in another currency, conversion creates the exposure. If a local grant is paid directly in the spending currency, that exposure may concern only other parts of the budget. There is no need to convert every payment artificially back through euros when matching local income to local expenses.
Run a less favourable scenario
Consider an invented example. Monthly rent of 500 units of the destination currency costs €400 at a planning rate of 1.25 units per euro. If the rate falls to 1.10, the same rent requires about €454.55. The local rent has not changed, but the euro cost has increased. Fees are not included in this example.
Test a less favourable conversion for all payments still outstanding. Treat that scenario as a planning assumption, not a prediction. Then identify the reserve that could absorb the additional expense and optional spending that could be delayed. The purpose is to discover a sensitive part of the budget, not to forecast the foreign-exchange market.
Compare the outcome of payment methods
For a transfer, compare the amount actually received with the total charged to you. A low fixed fee can be outweighed by a less favourable conversion rate. Check processing time, possible recipient charges and what happens if the payment needs reversing. Card and cash-machine transactions follow their providers' conditions; read the proposed currency and exchange rate before confirming.
Keep a calendar covering the deposit, first rent, grant receipts and return journey. Use those dates to decide when funds are needed. Converting a large amount early can reduce future conversions but ties up accessible money and creates other questions if plans change. For a single study trip, an understandable payment routine is generally more useful than repeatedly exchanging money in an attempt to profit from rate movements. Keep receipts so the final budget can be reconciled against actual debits rather than the rates originally assumed.
