A personal finance app that cannot answer “what do I have, right now?” is just a nicer ledger. When those balances sit in dollars, euros, sterling and lira, the question gets harder — and more important.
The point: convert for a view, not for a fiction. Lock the rate you care about, keep each account in its own currency, and let the total be a decision tool rather than a guess.
Why a single total matters
Most people who live across currencies already know their balances. What they do not have is a number they would actually use to decide: can I take this contract, move this month, or pay this invoice without scrambling.
A spreadsheet can add converted amounts. It cannot tell you whether yesterday’s rate, this morning’s rate, or the rate you agreed with a client is the one you meant. That gap is where people either over-save out of fear or over-spend because the big number looked comforting.
Convert for a view, keep the original
Every account should stay in the currency it actually holds. Your EUR current account is euros. Your USD savings account is dollars. Mixing them at the row level is how you lose the plot six months later.
Conversion belongs on the roll-up: a dashboard total, a net-worth line, a “can I afford this?” check. The original amount never goes away. If the rate moves, the view moves. The account does not pretend it changed currency overnight.
Lock the rate when the rate is the deal
Freelance invoices, property deposits, and family transfers often have a rate that is part of the agreement. If you convert those at whatever the market did this morning, you are measuring a different deal than the one you made.
A locked rate is a memory: “this transfer, this budget, this debt — we agreed 1 EUR = 1.087 USD.” Live rates still matter for the rest of your picture. They should not silently rewrite the numbers you already committed to.
What “one number” should include
A useful total is not only cash. It is accounts, minus the debts you actually owe, plus the money that is already spoken for this month.
- Liquid accounts in their own currencies, rolled up at a rate you understand.
- Budgets that still have room — so the total does not pretend grocery money is free to spend twice.
- Recurring payments that will leave before you next get paid.
- Debts with a remaining balance, in the currency of the debt.
If any of those live in a different tab, the number on the first screen is theatre.
A practical weekly habit
Once a week is enough. Open the roll-up. Check that every account you used this week is there. Scan upcoming recurring payments. If a rate looks wrong, it is usually because a locked rate and a live rate got mixed — fix that, not the whole spreadsheet.
The habit is not “become a markets person.” It is “refuse to make a money decision from three apps and a feeling.”
What this looks like in Rasa Money
Rasa Money keeps each account in its own currency, converts for the dashboard, and lets you lock a rate on the transfers and budgets where the rate is the deal. The total at the top is that roll-up — accounts, budgets, recurring payments and debts — in one place, in real time.
It is not a bank. It does not hold or move your money. It is the picture you were already trying to build, without the tab that always drifts out of date.