Bad Debt Rate Calculator

Bad debt rate is the cleanest property AR health metric — write-offs as a percentage of gross billings. Combined with collection rate and DSO (days sales outstanding), it tells operators whether screening, collections process, or local market conditions are driving losses. This calculator computes all three for benchmarking against industry norms.

Annual write-offs

Annual billings (gross)

Annual collections

Outstanding AR

Bad debt % of billings

1.20%

Collection rate %

97.00%

Days sales outstanding

15.6

How the math works

Bad debt rate = annual write-offs ÷ gross billings. Industry benchmarks: Class A multifamily 0.5-1.5%; Class B 1.5-3%; Class C 3-6%. Workforce/affordable can run 5-10%. DSO under 30 days is healthy; over 45 signals collection process problems.

Tighter screening (3x rent income, 600+ credit) plus active early-delinquency follow-up (day 4 call, day 10 notice) typically cuts bad debt 30-50%.

Editorial noteMaintained by EveryCalc - Reviewed June 2026

EveryCalc calculators are designed for fast, practical estimates with transparent inputs and no required account. We use plain formulas, visible assumptions, and related tools so visitors can check the result from more than one angle.

Results are informational only. For financial, tax, legal, medical, construction, or other high-impact decisions, verify the output against primary sources or a qualified professional.

Learn more about our review process on the EveryCalc methodology page.

How this calculator works

What this page estimates

This Bad Debt Rate Calculator is built to give a quick, browser-based estimate for bad debt rate. Bad debt rate is the cleanest property AR health metric — write-offs as a percentage of gross billings. Combined with collection rate and DSO (days sales outstanding), it tells operators whether screening, collections process, or local market conditions are driving losses. This calculator computes all three for benchmarking against industry norms. The inputs stay on the page during normal use, and the result should be treated as an estimate for planning, comparison, or education rather than professional advice.

Calculation approach

The calculator applies the standard relationship implied by the inputs, then formats the answer so it can be checked and reused. For finance tools, the most important step is using consistent units, rates, time periods, and assumptions before comparing the result with another calculator or outside quote.

Example workflow

For example, start with a realistic value you already know, change one input at a time, and watch how the answer moves. That makes it easier to tell whether the result is being driven by the main amount, the rate, the time period, or a unit conversion.

Practical checks

Use current, real-world numbers when the result affects money, health, tax, or legal decisions.
Run a low, base, and high case when the inputs are estimates.
Check the related calculators below when the next decision depends on a different assumption.

How to interpret the bad debt rate result

Best use

Use the result as a planning number for comparing payments, rates, returns, tax reserves, or cash-flow choices before you request a quote or make a commitment.

Cross-check

Compare the answer with the contract, lender estimate, tax form, brokerage statement, payroll record, or invoice that will control the real-world outcome.

Watch for

Do not rely on a single optimistic rate, return, or fee assumption. Money pages work best when you run low, base, and high cases and keep professional advice separate from the estimate.

This page belongs to the Finance calculator library, so the answer should be read in the context of the decision you are modeling rather than as a universal rule.

Before relying on this bad debt rate estimate

Most calculator mistakes come from the inputs, not the arithmetic. Use this short audit before you reuse the answer in a spreadsheet, quote, application, or important conversation.

Confirm source numbers

Match balances, rates, fees, taxes, income, and payment dates against the lender quote, payroll record, tax form, statement, invoice, or contract.

Separate cash flow from total cost

A lower monthly payment can still cost more over time if fees, interest, taxes, or a longer term are hidden in the structure.

Run conservative cases

Test at least one higher-cost or lower-return case before using the output for a purchase, refinance, investment, loan, or tax decision.

Rerun this page when the rate, price, term, fee, tax rule, income, expense, or expected holding period changes.

How to Use

Enter annual write-offs, gross billings, and actual collections.
Enter outstanding AR.
Read bad debt %, collection rate, and DSO.

Frequently Asked Questions

Industry benchmarks?

Class A 0.5-1.5%; Class B 1.5-3%; Class C 3-6%; affordable/workforce 5-10%. DSO healthy under 30 days.

Differences across markets?

Tight regulatory markets (CA, NY) often have higher bad debt due to longer eviction timelines. Texas and FL faster eviction = lower bad debt.

Reduce bad debt?

Income verification at 3x rent minimum, credit screening (600+ score), active early-delinquency follow-up (day 4 call), and small-claims court for collection (rather than write-off) all cut bad debt.