How budget rollover works, with a 3-month example
Rollover carries unspent and overspent money into next month for any category you choose. See a 3-month example and when to turn it off.
Safe to spend is the lowest your cash balance is projected to dip in the next 60 days. See the method, a worked example and "Lowest point ahead".
Worked example, round numbers
Everyday spending is CA$50 a day. Safe to spend is the lowest point, not today's balance, because rent is coming.
In Tally, safe to spend is the lowest balance your cash accounts are projected to reach over the next 60 days. If you spend down to that line and no further, the projection never goes below zero. It is a projection, not a promise, and the app labels it that way.
Tally builds a day-by-day picture of your cash balance and reads off the lowest point. It uses three things:
The window is 60 days by default and can be set anywhere from 7 to 365. Only cash accounts count. A house or car you added by hand never props up next month’s rent.
Say your chequing balance today is CA$3,000, and Tally has these facts:
The balance on day 5 is 3,000 minus 5 days of spending (250) minus rent (1,500). That leaves CA$1,250.
From day 5 to day 13 it keeps drifting down by CA$50 a day, so after 8 more days it reaches CA$850. On day 14 your pay arrives and the balance climbs again.
The lowest point in that stretch is CA$850. That is the safe to spend figure: you could spend up to CA$850 on top of your usual life and still make rent without going below zero. (A real run looks at all 60 days, so the lowest point could land in a later cycle. This example shows one.)
Notice that CA$3,000 is not the answer. The balance in your account today is not money you are free to spend, because rent is coming.
“Lowest point ahead” is the label Tally uses instead of “Safe to spend” when the projected low is below zero. If the same example started with CA$1,500 instead of CA$3,000, the day-5 balance would be 1,500 minus 250 minus 1,500, which is minus CA$250. Tally then shows “Lowest point ahead” with a “Shortfall ahead” stamp.
The reason for the rename is plain: a card should never say “safe” next to a negative number. The new label tells you that money is going to run short, and how short.
Because it depends on guesses about the future. On Android, the card reads that it is a projection from synced balances, upcoming bills and recent spending, and not a guarantee. A few things can make the real number differ:
Safe to spend gets better the more regularly you import. See how to budget without linking your bank account for a light routine.
A starting balance. That comes from an import that carries running balances, such as a Wise account statement, a TD download or an OFX file. Without one, the card says so and points you to Import. If a transaction is in a currency with no exchange rate, Tally withholds the forecast instead of showing a wrong one. See statement file formats explained and how to budget in two currencies.
“Safe to spend” is not unique to Tally, and the meaning varies. PocketGuard builds its app around a similar idea. Its homepage says “You always know how much money you have left to spend after budgeting for necessities” (PocketGuard, checked 8 October 2026). That is a leftover-money approach: take what comes in, set aside bills, debt payments and goals, and show what remains. As described on its homepage, the focus is on what is left.
Tally’s version looks forward instead. It asks how low your balance gets over the coming weeks, and it names the lowest point. Both are useful questions. Different apps answer them differently, so when you see the phrase elsewhere, check what it is counting.
No. Budgets set a target per category for the month, and rollover can carry what you did not use into the next month. Safe to spend answers a different question: how much room do I have before cash runs short? Use both.
Tally is still in development. The figures in screenshots on this site are sample data.
Budgets, rollover, the cash-flow forecast and recurring bills work together.