The Catholic Company's headline offer is 15% off orders over $35, available to first time customers who sign up. However, the store has several other discounts active, so your best saving depends on what you're buying and whether you've shopped there before.
Returning customers or small baskets under $35: If you're a returning customer or your order comes to less than $35, check whether any items fall under the sale sections—the final sale items go up to 73% off, and the beautiful Catholic gifts selection offers up to 70% off, which will almost certainly beat any percentage discount.
Baskets between $35 and $50: This is where The Catholic Company's 15% off orders over $35 discount applies. If you have existing items in your cart that total $35 or more, take the 15% off deal rather than hunting through sale sections. On a $40 basket, you'll save $6. On a $50 basket, you'll save $7.50.
Larger orders over $50: Once you reach $50, the store has a 10% off option for that threshold, but you should stick with the 15% off orders over $35 deal, which provides a better saving. For example, a $75 order saves $11.25 with 15% off rather than $7.50 with 10% off. If free shipping is available on orders over $75 and you're close to that threshold, factor in the shipping cost to see whether reaching it makes sense.
Shopping specific bundles and products: The store has dedicated discounts on particular items worth checking first. The Lenten Family Bundle has $20 off, and Eucharistic Fire: A Retreat with St. Carlo Acutis is 40% off, so these should be your first port of call if you want either product.
First time customers: When you're signing up, you'll see the 15% off first order over $35 offer, which applies once your basket reaches that threshold.
Remember that only one offer applies at checkout, so compare your actual basket total against the available options and choose whichever produces the biggest saving. Sale items and bundle discounts sometimes outperform percentage deals, so it's worth checking whether the products you want are already discounted before applying a standard percentage offer.