I've helped dozens of couples plan their weddings, and the same money mistakes come up over and over. Here are the five that hurt the most:

1. Not setting a hard budget ceiling before touring venues.

Venues are designed to make you fall in love. If you walk in without a number, you'll "stretch" your budget by $5K before you've even picked a caterer. Set your max BEFORE you tour. Non-negotiable.

2. Ignoring the per-head catering math.

That guest list of 150? At $85/head for food and drink, you're looking at $12,750 just for catering. Every person you add costs real money. Edit ruthlessly.

3. Forgetting about the "invisible" costs.

Gratuities, service charges, sales tax, cake cutting fees, overtime charges, setup/breakdown fees. These add 15-25% on top of every vendor quote. Build a 20% buffer into your budget from day one.

4. Booking the photographer last.

Good photographers book 12-18 months out. By the time most couples start looking, the best ones are gone. Book your photographer within 2 weeks of locking your venue.

5. DIY-ing things you have no business DIY-ing.

DIY centerpieces sound cheap until you factor in materials, trial runs, storage, transport, and the 6 hours of setup on the morning of your wedding. Some things are worth paying for so you can actually enjoy your day.

The couples who save the most aren't the ones who cut corners — they're the ones who planned ahead and knew where the real costs hide.

If this resonates, I built The Wedding Blueprint to give you the full system. Step-by-step planning, budget tools, and a community of couples figuring it out together.