10% Off✦ Verified
10% off
10% Off Discountfilterstore Shop at Tier1
90% chance
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Save at Tier1 with verified coupon codes, promo codes and exclusive offers.
6
Codes
2
Verified
20% Off
Best Deal
Updated Aug 15, 2026 · 2 verified
Best code right now
10% off
Verified — confirmed working
10% off
10% Off Discountfilterstore Shop at Tier1
More codes — may have expired
20% off
20% Off Laptops, Pcs at Tier1
5% off
5% Off Select Items at Tier1
Free gift
Free Gift Storewide at Tier1
Free gift
Free Gift Select Items (valid Only on Selected Models) at Tier1
TrulyThrift currently tracks 6 Tier1 coupon codes, of which 2 are verified working. The best available discount right now is 20% Off. Page last verified Aug 15, 2026.
Save at Tier1 with verified coupon codes, promo codes and exclusive offers.
Visit Tier1 ↗| Offer | Discount | Type | Status |
|---|---|---|---|
| 10% off | 10% Off | Percent | Verified |
| 10% off | 10% Off | Percent | Verified |
| 20% off | 20% Off | Percent | Unverified |
| 5% off | 5% Off | Percent | Unverified |
| Free gift | Free Gift | Gift | Unverified |
| Free gift | Free Gift | Gift | Unverified |
Truly Thrift verifies Tier1 codes through a three-layer system: automated checkout testing, cross-source corroboration, and real shopper reports. Verified codes show a green badge; other codes show their recent chance of working. Code health is a per-code reliability score built from that evidence — right now the 6 codes listed for Tier1 carry an average code health of 43%. Read our full verification process for details across every store.
Direct checkout testing currently covers Shopify storefronts, with more platforms rolling out over time. Until Tier1 is covered, Layers 2 and 3 below carry more of the weight for this store's codes.
For codes we can't test directly, we check whether independent coupon listings still show the same code as active. If independent sources agree a code is gone, we downgrade or hide it — even before a shopper reports back.
Every "Worked" / "Failed" button on this page feeds straight into these codes' scores. No shopper reports have come in for Tier1 this week yet — yours would be the first.