The lightest system that still holds up a year later.
Most celiac households lose money to expenses nobody wrote down. The $4 loaf that cost $2 in its conventional version, the flour blend with no conventional equivalent at all, the forty-mile round trip to the one store that carries the certified oats. Individually forgettable, and collectively the whole reason the year looks smaller on paper than it felt in the checkout line.
This worksheet is a running log with a quarterly checkpoint. You enter expenses as they happen, one row each. Four times a year you open the summary sheet, confirm the totals look right, and save a dated copy. At year end the annual sheet nets everything into a single figure, minus anything an HSA or FSA already reimbursed, so nothing gets counted twice.
Four sheets of plain spreadsheet. Works in Excel, Numbers, or Google Sheets. Nothing to install, and you do not have to give us an email address to get it.
The Quarterly Celiac Spending Audit Worksheet
One workbook, four sheets, formulas already wired, plus a printable guide that walks through the quarterly routine. Take both, or just the spreadsheet.
Log as you go, audit four times a year.
The only recurring commitment is a standing ten-minute appointment with your receipts.
Four sheets that do four jobs.
Pre-formatted, with example rows you can clear and replace with your own.
Transactions
Date, vendor, category, item, what you paid, what the conventional equivalent costs, the calculated excess, an HSA or FSA flag, and a notes column for where the receipt lives.
Quarterly Summary
Quarterly totals by category with transaction counts, so the four checkpoints are a review rather than a reconstruction. This is the sheet you save a dated copy of.
Annual Summary
The year broken out by quarter and category: GF food premium, specialty items with no conventional equivalent, medical, mileage in dollars, HSA and FSA reimbursements subtracted, and the net GF premium tracked.
Mileage Log
Date, destination, the medical purpose, round-trip miles, and the calculated cost at the IRS medical mileage rate. The 2026 rate is $0.205 per mile; confirm the rate for your tax year before you rely on the total.
Six categories, and why the distinction matters.
Food and Specialty are treated differently on purpose, because only one of them has a conventional equivalent to compare against.
- Food — gluten-free groceries that have a conventional equivalent. The sheet tracks the excess above the regular price, not the full amount.
- Specialty — items with no conventional counterpart, such as xanthan gum, gluten-free flour blends, or certified gluten-free oats. Leave the conventional price blank and the full amount is tracked.
- Medical — visits, tests, and supplements.
- Mileage — trips to specialty stores or medical appointments, logged on the Mileage Log sheet.
- Travel — travel undertaken for a medical purpose.
- HSA/FSA — expenses already reimbursed, flagged so the annual total subtracts them instead of double-counting.
Four habits that make the year hold together.
Set a weekly reminder
Friday at lunch, ten minutes, add the week's receipts. That is the entire job. A quarter of backlog is a chore; a week of it is a coffee break.
Use the notes column
Write down where the receipt is saved, something like Receipts/Q1/2026-03-14_WholeFoods.pdf. Future you, in April, will be grateful.
Log the purpose of every trip
"Whole Foods, gluten-free specialty groceries" beats "Whole Foods." The medical purpose of the trip is the part that has to be documented.
Never double-count a reimbursement
Flag anything an HSA or FSA already paid for. The Annual Summary subtracts those automatically so the net figure stays honest.
The excess-cost concept, grounded in primary guidance.
The worksheet isolates the same incremental gluten-free cost that federal guidance recognizes for a medically necessary diet.
- IRS Publication 502, Medical and Dental Expenses irs.gov/pub/irs-pdf/p502.pdf
- IRS Standard Mileage Rates irs.gov/tax-professionals/standard-mileage-rates
- IRS Private Letter Ruling 202311001, quoting Rev. Rul. 55-261 irs.gov/pub/irs-wd/202311001.pdf
- Celiac Disease Foundation worksheet celiac.org/wp-content/uploads/2010/02/Tax_Deduction_Worksheet.pdf
Friendly reminder. This worksheet is a general educational cost-tracking tool, not personalized medical, tax, or legal advice. It helps you see and total the gluten-free premium; it does not decide what belongs on your return. The premium is recognized only for household members formally diagnosed with celiac disease, the medical expense total is subject to income-based thresholds that change by year, the mileage rate changes annually, and an expense reimbursed through an HSA or FSA cannot also count toward the same medical total. Keep your receipts and your conventional-equivalent prices, and review the figures with your CPA or tax professional before filing.
The spreadsheet works. Gluten Hero does the typing.
Snap a receipt and the app categorizes it, runs the price comparison, logs the mileage, separates HSA and FSA reimbursements, and builds the year-end report your CPA or tax professional needs. If you find yourself dreading the Friday review, that is the signal.