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I just figured out why my job costing was always off by about 15%

For the last two years, I was just dumping all my material receipts into our software and calling it good. The epiphany hit last Tuesday when I was reviewing a finished deck project and the profit was way lower than expected. I realized I was only tracking the big stuff like lumber and concrete, but completely missing the small, repeat buys like screws, blades, and sealant cans. Those $40 trips to the hardware store three times a week add up fast. Now I make a separate 'consumables' category for anything under $50. Has anyone else set up a better way to catch those small costs before they bleed you dry?
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kim.wren
kim.wren8d ago
How do you track those small buys without it becoming a huge time suck?
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ray_webb6
ray_webb68d agoTop Commenter
I was reading a trade magazine article that called those small costs "death by a thousand cuts." The writer suggested setting a weekly petty cash amount just for those under fifty dollar runs, then reconciling it every Friday. That way you're not logging every single receipt, just tracking the weekly total against your budget. It turned my whole afternoon of paperwork into a fifteen minute task.
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