Calculate your DSO in seconds. See exactly how much cash is locked in unpaid invoices, how you compare to your industry, and how much you free up by collecting faster.
Days Sales Outstanding (DSO) is the average number of days your business waits to receive payment after making a sale on credit. It is the single most important metric for accounts receivable health.
The DSO formula used by CFOs and accountants worldwide:
Standard DSO Formula
DSO = (AR Balance ÷ Credit Revenue) × Days
Example:
AR = ₹4,80,000 | Revenue = ₹3,00,000 | Days = 30
DSO = (4,80,000 ÷ 3,00,000) × 30 = 48 days
This means your customers take an average of 48 days to pay — and ₹4,80,000 of your revenue is always tied up in receivables at any given moment.
What DSO Tells You
The cash impact of high DSO
For a business billing ₹1,50,000/month with a DSO of 52 days: ₹2,60,000 is locked in AR at all times. Cutting DSO to 30 days frees up ₹1,10,000 — permanently.
Anonymized data — Q1–Q4 2024.
Agency A — Digital Marketing, Bengaluru
Business B — Wholesale Trade, Ahmedabad
Manufacturer C — Auto Parts, Pune
Source: invoicefollowups.com internal dataset, Q1–Q4 2024. Anonymized across IT services, wholesale trade, and manufacturing sectors.
Uses the standard accounting DSO formula: (AR Balance ÷ Credit Revenue) × Days in Period.
Total outstanding invoices not yet paid by customers right now
Revenue from invoiced/credit sales this month (exclude cash sales)
Most SMBs calculate DSO monthly. Use quarterly for smoother seasonal data.
Formula: DSO = (AR Balance ÷ Credit Revenue) × Days in Period
Enter your AR balance and monthly revenue to calculate your DSO instantly.
DSO rises when customers pay late — and late payment is almost always preventable. Research across 3,200+ Indian SMBs shows that 73% of overdue invoices are late simply because no follow-up was sent, not because the customer refused to pay.
Every day of delay has a real cash cost. For a business with ₹1,50,000 in monthly revenue:
Every 15-day increase in DSO = ½ month of revenue permanently frozen in receivables.
Businesses using systematic invoice follow-up automation consistently reduce DSO by 35–55% within 60 days. The mechanism is simple: most customers will pay on time when reminded correctly — they just need the right nudge at the right time.
Actual Results — invoicefollowups.com Users
DSO Formula
DSO = (AR ÷ Revenue) × Days
Example (monthly):
AR = ₹4,80,000
Revenue = ₹3,00,000
Days = 30
DSO = 48 days
DSO by Industry (India 2024)
Source: SIDBI MSME Pulse 2024 ↗
DSO → Cash Flow, directly
Cutting DSO from 52 → 30 days on ₹1,50,000/month revenue frees ₹1,10,000 permanently — with zero new sales.
→ Also calculate your Working Capital RequirementIndian SMBs using structured invoice follow-ups cut their DSO from 47 days to 26 days within 60 days. No hiring, no chasing manually — just systematic automation.
Working Capital Requirement Calculator
Calculate exactly how much cash your AR cycle locks up.
ToolCash Flow Gap Calculator
Find the gap between when you earn and when you collect.
GuideHow to Get Faster Payments from Buyers
Practical follow-up tactics used by Indian exporters and agencies.
GuideWorking Capital Options for MSMEs
From bank OD to invoice discounting — compared with real costs.
External ↗RBI MSME Finance Guidelines
Official AR and receivables norms from Reserve Bank of India.
External ↗SIDBI MSME Pulse Q4 2024
Industry DSO benchmarks across Indian sectors.
Methodology & Data Attribution
DSO Formula: Standard accounting method — (Accounts Receivable Balance ÷ Total Credit Revenue) × Days in Period. Monthly calculation uses 30-day period.
AR Turnover Ratio: Annualized — (Monthly Revenue × 12) ÷ AR Balance. Reflects how many times per year the full AR balance is collected.
Benchmark Data: invoicefollowups.com internal dataset (3,200+ Indian SMB AR profiles, 2023–2024) + SIDBI MSME Pulse Q4 2024 ↗ + RBI MSME Finance Norms 2023 ↗
Content Author: invoicefollowups.com Research Team (AR Analyst, Finance)
Last Updated: April 2025
Assumptions: 30-day month for monthly calculation. Credit revenue only (excludes cash sales). No seasonal adjustment.
References: RBI.org.in ↗, SIDBI.in ↗, MSME.gov.in ↗