When I started planning my wedding, I made the same mistake every couple makes — I tracked expenses in a messy Notes app and "remembered" what vendors quoted me.

Three months in, I was $4,200 over budget and had no idea where the money went.

So I built a spreadsheet system. Not a basic template with 10 rows. A real system:

Budget Tracker — auto-calculates remaining budget by category, flags overages instantly, tracks deposits vs. balances due

Vendor Tracker — side-by-side comparisons, contract dates, payment schedules so you never miss a deadline

Guest List Manager — RSVPs, meal choices, plus-ones, table assignments, all linked

The result? I clawed back that $4,200 and finished $800 under budget.

Now I've packaged these templates for other couples. Three tiers depending on how deep you want to go — starting at $19.

If you're in the early stages of planning, trust me: a $19 spreadsheet now saves you thousands later.