How to reprice c-store inventory after the 2025 tariffs.

What changed in 2025

Starting April 2025, the federal government layered a series of tariffs on imported goods that affect almost every category in a convenience store:

• A universal 10 percent tariff on most imports from all countries
• A China-specific rate that briefly hit 145 percent and quickly settled around 30 percent
• Additional sector-specific tariffs on metals, packaging, and certain food ingredients

The categories most affected at a typical c-store:

• Lighters (China-dominant)
• Pre-paid cards (plastic shells, China-sourced)
• Salty snacks (imported packaging, Mexican corn products)
• Auto products (motor oil bottles, washer fluid jugs)
• Health and beauty (single-serve packaging)
• General merch (sunglasses, phone accessories, novelties)
• Some beverages with imported ingredients or aluminum packaging

Step 1: pull a vendor cost change report

Before you touch retail prices, you need to know exactly which costs moved and by how much. A vendor cost change report compares the cost on each SKU from your most recent invoice against the cost on the prior invoice. Any change over 2 percent gets flagged.

Most independent operators do not have this report. They accept the new invoice, post it to accounts payable, and the cost change quietly flows into shelf price weeks later, after margin has already eroded.

A back-office system that scans every invoice (OCR or EDI) and compares line-level costs to the prior invoice will produce this report in 10 minutes. From a stack of paper invoices, plan 3 to 5 hours per week for the next 4 weeks while tariffs ripple through.

Step 2: audit the price increase letters

Every vendor will send a price increase letter blaming tariffs. Some of those letters are accurate. Some are opportunistic.

Three checks before accepting:

• Country of origin. A tariff on China does not apply to a product made in Indiana. Ask the rep where the SKU is manufactured. If the answer is vague, request a tariff exemption certificate.
• Magnitude. A 10 percent tariff on a $1.00 cost item is $0.10. If the increase letter says $0.18, ask why. Common answers: freight surcharges, packaging cost from a separately-tariffed input, hedge loss on raw materials. Some answers are fair, some are padding.
• Effective date. Tariffs took effect on specific dates. A letter dated April 5 cannot legitimately reflect a tariff that took effect April 14. Hold the cost at the old level for shipments before the effective date.

Step 3: reprice the velocity SKUs first

With 4,000 SKUs in a typical c-store, you cannot reprice everything in one day. Prioritize:

1. Top 50 SKUs by sales volume. These drive most of your margin. A 1-point margin slip on a top-50 SKU costs more than a 5-point slip on a long-tail SKU.
2. Top 100 SKUs by cost increase magnitude. The lighters that jumped 22 percent matter more than the aspirin that jumped 4 percent. Sort vendor cost change report by percent change descending.
3. Categories with thin starting margin. Cigarettes and packaged beer are already 14 to 18 percent margin. A 6 percent cost increase eats almost a third of gross margin if you do not reprice.

The long-tail SKUs (your slowest-moving 2,000 items) can be repriced in batches of 200 per week over the next 5 to 8 weeks. The opportunity cost of holding old prices on a slow SKU is small.

Step 4: do the markup math right

Most owners reprice by adding the cost change to the retail price. That math is wrong, and it gives you back less margin than you started with.

The right approach is to maintain target gross margin percentage. Worked example for a $1.49 retail item that cost you $1.00 and now costs $1.10:

• Old retail $1.49, old cost $1.00, old GM% = 33%
• Wrong math: $1.49 + $0.10 = $1.59 retail. New GM% = 31%. You lost 2 points.
• Right math: $1.10 cost / (1 - 0.33) = $1.64 retail. New GM% = 33%. Margin held.

For repricing speed, a back-office system that holds your target margin percentage by category and recalculates retail when cost changes is worth the entire subscription cost during a tariff wave. Manual category math across 4,000 SKUs is a 30-hour project, and the typing errors cost you another 1 to 2 margin points.

Step 5: hold gross margin by category every week

After you reprice, watch category-level gross margin weekly for 4 to 6 weeks. If a category drops more than 1 point compared to the pre-tariff baseline, one of three things is happening:

• A SKU in the category was missed in the reprice
• The vendor passed a second cost increase you did not catch
• Customers shifted to lower-priced SKUs and your category mix shifted

The first two are caught by re-running the vendor cost change report and the price-change audit. The third is a signal, not a problem, and tells you to expand selection in the lower-priced tier.

The 5 mistakes operators are making during the 2025 tariff wave

1. Repricing only after sales reports show the problem

By the time category margin shows up red on the P&L, you have already given away 60 to 90 days of margin. Reprice based on the invoice cost change, not the downstream margin signal.

2. Accepting vendor price increase letters at face value

Some vendors are using the tariff narrative to push through increases on products that are not affected. Ask about country of origin and the specific tariff line. Hold the price if the answer is vague.

3. Repricing the entire store on the same day

A 4,000-SKU reprice in one day creates typing errors and burns out your team. Phase it. Top 50 in day one. Top 200 by end of week one. The long tail over 5 to 8 weeks.

4. Forgetting to update the POS price book and the shelf tags at the same time

A POS price change without a shelf tag change creates cashier conflict at the register and a refund risk. Print the new shelf tags first, then push the price change to the POS at end of day.

5. Not auditing the second wave

Tariffs settle, but they shift. A 145 percent rate becoming a 30 percent rate triggers a second wave of price notice letters. Some will be decreases (rare but real), most will be holds, and some vendors will hold the old higher cost. Re-run the vendor cost change report monthly for the rest of 2025.