Left-to-spend tells you what’s free today. A heads-up looks ahead: if bills due before your next paycheck will take more than you have, Copper tells you now, while there’s still time to adjust.
Heads up: 140shortbeforepayday.RentandCarInsurancelandbeforeFriday′spaycheck.You′llbe140 short before payday. Rent and Car Insurance land before Friday's paycheck. You'll be 140 short.

How the forecast works

Copper starts with your current left-to-spend and walks forward to your next payday, one bill at a time in due-date order:
  1. It takes each bill and card payment due between today and payday.
  2. For each one, it counts only what the bucket doesn’t already hold. A fully funded bill costs nothing extra.
  3. If left-to-spend drops below zero along the way, that’s a heads-up. The shortfall is the lowest point it reaches.
A bill due on payday itself isn’t counted, since the paycheck can cover it.

What counts as payday

If a funding schedule follows your paycheck, that’s payday. Otherwise it’s your next funding run. Without any funding schedule, there’s nothing to look toward, so there are no heads-up alerts.

When there’s no heads-up

  • Every bill due before payday is funded, or left-to-spend covers what’s missing.
  • Left-to-spend is already negative. That’s shown on the Left-to-Spend card as Over-allocated, not as something coming.

Where you see it

  • On the Dashboard, a heads-up card sits under Left-to-Spend with the bills and the shortfall. Tap it to open the first bill that’s short.
  • As a notification, sent to everyone on the budget. Copper checks once a day and notifies you once for each payday and set of bills. If a new bill joins the list, you hear about it again.
The heads-up clears on its own once the numbers work again.

What to do about it

  • Fund the short bills first. Open a bill and tap Fill bucket, or use Fund all › Just bills on the Buckets tab.
  • Move money out of a spending or goal bucket by lowering its balance; it goes back to left-to-spend.
  • Hold off on spending until payday.
With Pause when money’s tight on, round-ups stop while a heads-up is active and start again once your paycheck lands.

Shared budgets

Everyone on a shared budget gets the same heads-up, because left-to-spend is budget-wide. A bill someone keeps private still counts, but it’s named “a private bill” to everyone else.