Business

Accounts Receivable Days Calculator

Calculate your days sales outstanding (DSO) and benchmark against industry averages. Understand how quickly your business collects payments from customers.

Quick Answer

AR Days = (Accounts Receivable / Annual Revenue) x 365. If you have $150,000 in AR and $1.8M annual revenue, your AR days is 30.4, meaning customers take about a month to pay on average.

Calculate AR Days

Enter your accounts receivable balance and annual revenue.

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Disclaimer: This calculator provides a simplified AR analysis. Actual collection patterns depend on customer mix, payment terms, industry norms, and economic conditions. Consult a financial advisor for cash flow management decisions.

About This Tool

The Accounts Receivable Days Calculator helps business owners and finance teams measure collection efficiency by calculating days sales outstanding (DSO). This metric reveals how long it takes your business to convert credit sales into actual cash, directly impacting your working capital and growth capacity.

Why AR Days Matter for Cash Flow

Accounts receivable represents money you have earned but not yet received. Every day that passes between invoicing and collection is a day your business finances the customer's purchase. For growing businesses, this gap can create serious cash flow pressure even when the income statement shows healthy profits. Understanding your AR days helps you plan cash needs and identify when collection processes need attention.

The relationship between AR days and cash flow is linear: reducing AR days by even a few days across your entire customer base can free up substantial working capital. A business with $5 million in annual revenue that reduces AR days from 45 to 35 frees up approximately $136,000 in cash, which can be deployed for growth or used to reduce borrowing costs.

Benchmarking Against Your Industry

AR days varies dramatically across industries. B2C businesses like retail typically have very low AR days because customers pay at the point of sale with cash or credit cards. B2B businesses, especially those serving large enterprises or government agencies, often have much higher AR days due to Net 30, Net 60, or even Net 90 payment terms being standard in their industry.

The key insight from benchmarking is not just where you stand relative to your industry, but the trend over time. An AR days figure that is rising quarter over quarter warrants investigation, even if it is still below industry average. It could signal that a large customer is stretching payments, that newer customers have weaker credit profiles, or that your invoicing process has gaps.

AR Turnover Ratio

The AR turnover ratio is the complement to AR days, showing how many times per year your receivables are collected and replenished. A turnover of 12 means you collect your average receivables balance roughly once per month. Higher turnover indicates more efficient collection. This metric is especially useful when comparing companies of different sizes within the same industry, as it normalizes for revenue scale.

Practical Collection Strategies

Effective AR management combines proactive and reactive measures. Proactively, establish clear credit policies, send invoices immediately, and offer multiple payment methods. Reactively, implement a systematic follow-up cadence: a friendly reminder at the due date, a firmer notice at 15 days past due, and escalation procedures for accounts beyond 30 days past due. Automated accounting software can handle most of this workflow without manual intervention.

Frequently Asked Questions

What are accounts receivable days?
Accounts receivable days, also known as days sales outstanding (DSO), measures the average number of days it takes a company to collect payment after a sale is made. It is calculated as (Accounts Receivable / Annual Revenue) x 365. A lower number indicates faster collection, which means better cash flow. For example, an AR days of 30 means that on average, customers pay their invoices within 30 days of the sale.
What is a good AR days number?
A good AR days number depends on your industry and payment terms. If your standard terms are Net 30, an AR days of 30-35 is excellent. An AR days significantly higher than your stated terms suggests collection issues. Generally, AR days under 45 is considered good for most B2B businesses. Retail businesses typically have much lower AR days (5-15) because customers pay at the point of sale, while construction and government contracting may have AR days of 60-90 or more.
How is AR turnover different from AR days?
AR turnover and AR days are inverse metrics that express the same underlying reality. AR turnover = Revenue / Accounts Receivable, telling you how many times per year receivables cycle. AR days = 365 / AR Turnover, converting that cycle count into days. An AR turnover of 12 means receivables turn over 12 times per year, which equals approximately 30 AR days. Both metrics measure collection efficiency, but AR days is often more intuitive because it maps directly to your payment terms.
Why is reducing AR days important?
Reducing AR days directly improves cash flow. For every day you shorten your AR cycle, you get paid faster, reducing the need for external financing. For example, a company with $10 million in annual revenue and 60 AR days has approximately $1.64 million tied up in receivables. Reducing AR days to 30 frees up approximately $822,000 in cash. This is money that can be reinvested in the business, used to pay down debt, or held as a buffer against economic downturns.
How can I reduce my AR days?
Effective strategies include: (1) Offer early payment discounts like 2/10 Net 30 (2% discount if paid within 10 days). (2) Implement automated invoicing to send bills immediately upon delivery. (3) Use electronic payment methods to eliminate mail float. (4) Conduct credit checks before extending terms to new customers. (5) Follow up on overdue invoices promptly and consistently. (6) Consider invoice factoring for persistent slow payers. (7) Review and update credit policies quarterly based on actual payment behavior.

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