How to Calculate Ice Fishing Auger Cover Cost in 5 Steps

Step 1: Count the covers the augers actually need

Start with the augers carried, not the covers on sale. Every auger carried needs its own cover — so the default count here is 2 for a pair of augers, not one cover shared between augers that both need their blades guarded. Check every auger before you settle the count, because an auger without a cover dulls its blades in transit for no saving, and a third auger needs its own cover on top. Write the count down before you look at any price: once a sale price is in front of you, it is easy to buy the covers on offer rather than the covers the augers need.

Step 2: Find the price per cover

Use the shelf price for the cover size and blade guard your auger actually needs — $28.00 a cover on the defaults. Covers differ in size and blade guard, and a loose cover that slips off on the walk to the hole is not a bargain at any price, so do not use one average price for every auger, and do not use a cover meant for a hand auger on a power auger whose blades it cannot guard; both errors cost money, one in dulled blades and one at the till. If the shop lists a bundle price, divide it by the cover count to get the per-cover price, and check whether the bundle price already includes a discount before you apply another one in step 4.

Step 3: Multiply count by price for the subtotal

The subtotal is the count times the price each: 2 × $28.00 = $56.00. This is the figure before anything is taken off and before any tax is added, and it is the figure most people mistake for the total. It is not the total — it is only the starting point. If your subtotal looks wrong, the count or the price is wrong, because this step is pure multiplication; fix the input, not the arithmetic.

Step 4: Take the discount off the subtotal

Multiply the subtotal by one minus the discount rate: $56.00 × 95% = $53.20 at 5% off. The discount comes off the subtotal, not off the taxed total, and that order matters — it is also why a bigger discount shrinks the tax in the next step. If a voucher applies only to certain covers, apply it only to those covers’ share of the subtotal, not to the whole basket.

Step 5: Add the tax, then check the per-cover figure

Tax is charged on the discounted price: $53.20 × 6% = $3.19, so the total is $53.20 + $3.19 = $56.39. Then divide by the count to check the per-cover figure: $56.39 ÷ 2 = $28.20 a cover. That per-cover figure is the one to compare against other shops and other covers — if it is higher than the shelf price you started with, something went wrong, because a discount should pull the per-cover figure below the shelf price, not above it.

Worked example

2 covers, $28.00 a cover, 5% off, 6% tax. Subtotal: 2 × $28.00 = $56.00. Discounted: $56.00 × 95% = $53.20. Tax: $53.20 × 6% = $3.19. Total: $53.20 + $3.19 = $56.39, which is $28.20 a cover. At 4 covers the same arithmetic gives $112.00 subtotal, $106.40 discounted, $6.38 of tax, $112.78 in all. At no discount the same 2 covers cost $56.00 plus $3.36 of tax, $59.36 in all. The Winter Ice Fishing Auger Cover Cost Calculator reproduces every one of these figures from the same inputs.

Three mistakes that break the total

First, taxing the pre-discount price: tax on $56.00 instead of $53.20 adds $0.17 of phantom tax and lands on $56.56 instead of $56.39. Second, counting covers on offer instead of covers the augers need: buying 4 covers when the augers need 2 ties up $56.39 that could have stayed in the household budget. Third, using the wrong cover’s size or blade guard: a loose cover that slips off on the walk to the hole is not a saving if the blades dull in transit — price the cover the auger needs, then look for that cover on sale.

Frequently asked questions