A simple way to split your money so bills are always covered and “fun spending” can’t silently eat your savings.
This is the simplest VaultRule version: two accounts + automation + one clear boundary.
Want the full checklist version? Use VaultRule Toolkit (Start Here).
Affiliate note: This post may contain affiliate links. If you use them, I may earn a commission at no extra cost to you. See Affiliate Disclosure.
The problem this solves (and why budgets fail)
- Tracking everything burns people out.
- One pile of money creates fuzzy boundaries (“I think I can spend this…”).
- Fuzzy boundaries cause overspending even with good intentions.
The VaultRule Two-Account System (simple version)
- Account 1: Vault (Bills & Basics) — must-pay costs + annual/irregular costs + a small buffer.
- Account 2: Flow (Spending) — day-to-day spending and choices.
The key is the boundary. If Vault is protected, your bills stay safe even when you make mistakes.
Need help deciding what counts as a bill? Use: Vault vs Flow: What Counts as a “Bill” (and What Doesn’t).
How to set it up in 30 minutes
- Step 1 — Choose the two accounts. The labels matter more than the bank.
- Step 2 — Calculate your Vault number. (Bills + annual ÷ 12 + buffer)
- Step 3 — Automate transfers. Payday → Vault first, Flow second.
- Step 4 — Set a Flow limit. Flow is allowed to run out. Vault is not.
If you want the exact math, use: How to calculate your Vault amount.
The rule that makes it work
If it’s not in Flow, it’s a no.
This rule removes mental math. You stop negotiating with yourself in the moment.
To set Flow properly (without tracking everything), use: How to set your Flow limit.
Quick example (numbers)
- Income: €2,500
- Vault (Bills & Basics): €1,700
- Flow (Spending): €600
- Leftover: €200 (savings/goals)
Next step
Set your payday transfer so Vault is funded automatically first: Automate VaultRule on payday.
Want the easiest implementation? Use the VaultRule Banking Checklist to pick the right features, copy a ready schedule from VaultRule Automation Templates, and set bills to auto-pay using the Vault bill-pay checklist.
Optional tool: Wise (separate Flow spending)
If your Vault and Flow are in the same bank app, it’s easy to “borrow” from bill money. A separate Flow tool makes the spending cap feel real.
Prefer a normal link: Open a free Wise account. For the full tool checklist, see Recommended Tools or the quick guide Wise for VaultRule.
Disclaimer: This is educational content, not financial advice.