Days in A/R Calculator

What this calculator shows

Days in A/R translates your receivables balance into time: how many days' worth of charges are currently unpaid. It is the clearest single measure of how fast billed work turns into money, and it moves for understandable reasons: submission delays, denials, slow payer follow-up and patient balances all stretch it.

Use your total A/R today and your gross charges for a recent period, with the number of days in that period. A 90-day period is typical.

How the calculation works

Days in A/R = total A/R / (gross charges for the period / days in the period). Example: $420,000 A/R and $1,080,000 charges over 90 days is $12,000 a day, so 420,000 / 12,000 = 35 days.

How to read your result

Why it matters: every extra day in A/R is cash your practice has earned but cannot use, and balances get harder to collect as they age. The fix depends on which bucket grows, which is why this pairs with the A/R aging calculator. Our guide to reducing days in A/R works through the levers, and A/R management is the team that works the buckets.

Looking for another measure? See all medical billing calculators or the formulas collected in our medical billing KPIs guide.

Before you rely on the number

Results are estimates for educational and operational planning, built from the figures you enter. They are not guarantees of reimbursement, savings or recovery, and they do not replace a review of your own claims, contracts and remittances. Do not enter patient-identifiable or protected health information: this calculator runs in your browser and nothing you type is stored or sent anywhere.