Guide

How many no-shows does your clinic lose (and what it costs)?

The math is simple: appointments per month x average fee x no-show rate. In Brazil, no-show rates run around 10% to 30%, and each no-show costs more than the fee itself: add the lost ticket, the fixed structure of the slot (staff, room, rent) and the cost of acquiring a replacement patient. This guide shows the math with real numbers, benchmarks by clinic type, and how clinics recover that money.

Updated September 2026 10 min read By Veluni Health

The math: the no-show cost formula

Monthly direct no-show cost = appointments/month x average fee x no-show rate
The real cost is about 2x that, because each empty slot also consumes fixed structure and the patient must be replaced.

Worked example with Brazilian numbers: a clinic seeing 60 consultations a month, with an average fee of R$250 and a 20% no-show rate loses R$3,000/month in fees (R$36,000/year). Add the slot structure and patient acquisition cost and the real number approaches R$6,000/month. At a R$500 consultation, just 2 no-shows per week means about R$4,000/month lost (Fácil Consulta, 2026). Another common calculation: 80 consults/month x 20% x R$200 = R$3,200/month (R$38,400/year) (Clinexa, 2026).

Peer-reviewed Brazilian studies show the same order of magnitude. A FGV study (Cadernos de Gestão Pública em Saúde, 2025) calculated R$117.03 in total cost per missed consultation in primary care units (salaries, payroll charges, materials, rent, utilities). A study in Espírito Santo (Saúde em Debate, 2019/2022) estimated R$13.85 per missed consultation and R$138.83 per missed specialized exam, with R$18.57 million wasted over 3 years in a single metropolitan region.

What an empty slot really costs

A no-show is not just the fee that never arrives. The cost has three layers:

There is also a cascade effect: the patient who no-showed may lose the exam sequence, the follow-up and the recurring revenue they brought. And the empty slot is not always recovered: a FGV study (2025) observed that freed hours are partly used for walk-ins, but morning slots tend to stay idle. In a SUS clinic in São Paulo (Cad. Saúde Pública, 2014), schedule utilization ranged from 63% to 87% depending on specialty and time of day: 13% to 37% of paid capacity sat idle on a typical day.

Benchmarks: no-show rates by clinic type

SettingNo-show rateSource
Brazil (typical)10% to 30%Multiple independent sources
Brazil, no confirmationabove 30%Clinexa (2026)
SUS primary care (Pelotas/RS)19.2%Silveira et al., RBMFC (2019)
SUS primary care (Esteio/RS)20.95%FGV (2025)
SUS specialties (ES)38.6% consults / 32.1% examsBeltrame et al. (2020)
Global average~23%Dantas et al., Health Policy (2018, 105 studies)
US private practices (median)5% to 7%MGMA (2018-2023)
UK NHS outpatient7.6%NHS England (2021/22)
Dermatology (Israel)27.6%Cohen et al., JEADV (2008)
Dental (Saudi Arabia)42.68%Alabdulkarim et al., PeerJ CS (2022)

Notice the gap between the US (median 5% to 7%) and Brazil (10% to 30%): much of it is confirmation and reminder infrastructure, not patient profile. That is the space between what your clinic loses today and what it could lose with an active confirmation process. To understand why patients no-show and the evidence-backed strategies, read how to reduce patient no-shows.

How clinics recover that money

1. Prevent the no-show (automatic reminders)

This is where the evidence is strongest. A Cochrane review of 8 trials (Gurol-Urganci et al., 2013) found that message reminders increase attendance (RR 1.14) at 55% to 65% lower cost than manual calls. A trial with 9,835 patients (Parikh et al., American Journal of Medicine, 2010) cut the no-show rate from 23.1% to 17.3% with an automatic reminder and to 13.6% with a live staff call. In Brazil, the state of Ceará cut absenteeism by 19% in 4 months with automatic confirmations. The detail that matters: multiple reminders outperform a single one (BMJ Open meta-analysis, 2016).

2. Recover the freed slot (waitlist and walk-in fill)

When a patient cancels or no-shows, the slot becomes revenue if it is filled fast. A study with 1 million automated waitlist offers (North et al., 2025) saw a 24.6% acceptance rate, with visits moving up an average of 22.6 days. In Brazil, daily agenda management (reassigning freed slots in real time) is what separates clinics that recover the slot from those that leave the chair empty: in Ribeirão Preto/SP, that practice helped cut absenteeism from ~40% toward ~15% (Morais et al., 2023). Overbooking calculated from no-show history also works: a simulation in a SUS clinic (Cad. Saúde Pública, 2014) raised expected utilization from 63% to 98% in some slots.

3. A no-show policy (communicated in advance)

Honesty matters here: the evidence for fines is weak. A randomized trial in Denmark (BMJ Open, 2018, 6,746 appointments) found that a fine of about R$270 did not reduce no-shows (5% in the fine group vs 5% in control), and only 21% of issued fines were ever paid. In Brazil, any no-show or late-cancellation charge is governed by the Consumer Protection Code (Lei 8.078/1990): the policy must be communicated before booking to be enforceable. In practice, what works is combining a clear reminder (mentioning the policy) and, for high-value consultations, a booking deposit, which is the legally safest option.

A 3-question self-check for your clinic

  1. How many consultations do you see per month? (call it X)
  2. What is your average fee? (call it R$ Y)
  3. In 100 appointments, how many no-shows do you estimate? (call it Z%)

Your monthly direct no-show cost is X x Y x Z%. Example: 60 x R$250 x 20% = R$3,000/month. Multiply by 12 for the year, and remember the real cost is about 2x (structure + replacement). If Z is above 15%, your clinic is above the healthy benchmark, and money is leaking through scheduling. To see the full system behind this math (agenda, confirmation, patient self-service), read what is an appointment scheduling system.

Frequently asked questions

How much does a patient no-show cost?

It costs the consultation fee plus the fixed structure of the slot (staff, room, rent) plus the cost of acquiring a replacement patient. A peer-reviewed US study (Kheirkhah et al., 2016) estimates US$196 per no-show; a FGV study (2025) calculates R$117.03 in total cost per missed consultation in the SUS.

What is a typical clinic no-show rate?

In Brazil, rates run around 10% to 30%, and clinics with no confirmation process exceed 30%. The global average is ~23% (review of 105 studies). In the US, the median for private practices is 5% to 7%.

How do I calculate my clinic's no-show cost?

Use the formula: appointments per month x average fee x no-show rate. Example: 60 consults/month x R$250 x 20% = R$3,000/month in lost fees (R$36,000/year). The real cost is about 2x, adding the fixed slot structure and patient acquisition cost.

Do no-show fees work?

The evidence is weak: a Danish randomized trial (BMJ Open, 2018) found no effect from a ~R$270 fine, and only 21% of fines were collected. In Brazil, any charge requires clear communication before booking (Consumer Protection Code). A booking deposit is the safest option.

Sources

  1. Kheirkhah A, et al. "The cost of no-shows in a US Department of Veterans Affairs healthcare system." BMC Health Services Research 16:13, 2016 (US$196 per no-show).
  2. FGV. "Custos no setor público: o custo do absenteísmo nas unidades básicas de saúde." Cadernos de Gestão Pública em Saúde v.30, 2025 (R$117.03 per consultation; Esteio/RS).
  3. Beltrame SM, et al. "Absenteísmo de usuários como fator de desperdício." Saúde em Debate 43(123), 2019/2022 (R$13.85 per consultation; R$18.57M over 3 years, ES).
  4. Dantas SO, et al. "Absence at scheduled medical appointments: a systematic review." Health Policy, 2018 (global average ~23%, 105 studies).
  5. Silveira GS, et al. "Prevalência de absenteísmo em consultas médicas em UBS do sul do Brasil." RBMFC 13(40), 2019 (Pelotas 19.2%).
  6. Oleskovicz M, et al. "Técnica de overbooking no atendimento público ambulatorial em uma unidade do SUS." Cad. Saúde Pública 30(5), 2014 (utilization 63-87%).
  7. Gurol-Urganci I, et al. "Mobile phone messaging reminders for attendance at healthcare appointments." Cochrane Database Syst Rev, 2013 (RR 1.14; 55-65% cheaper than phone).
  8. Parikh R, et al. "The effectiveness of outpatient appointment reminder systems in reducing no-show rates." Am J Med 123(6), 2010 (23.1% → 17.3% → 13.6%).
  9. Blæhr ML, et al. "Effectiveness and cost-effectiveness of fining non-attendance at outpatient appointments." BMJ Open 8(4), 2018 (fine had no effect; 21% collected).
  10. North K, et al. "Automated waitlist and self-rescheduling." Health Services Insights, 2025 (24.6% acceptance).
  11. Morais et al. "Absenteeism in 6-8 month scheduling windows." Interface, 2023 (~40% → ~15% with daily management).
  12. MGMA Stat. "No-show fees in medical practices on the rise." Jan 2025 (US median 5-7%).
  13. NHS England. "Reducing did not attends (DNAs) in outpatient services," 2021/22 (7.6%).
  14. Cohen B, et al. "No-attendance at first dermatology visits." JEADV, 2008 (27.6%).
  15. Alabdulkarim A, et al. "No-show rates in dental clinics." PeerJ Computer Science, 2022 (42.68%).
  16. Dr. Finanças. "No-show na clínica: quanto custa a falta do paciente." Blog, Aug 2026 (R$250/clinic hour example).
  17. Clinexa and Fácil Consulta, 2026 (Brazilian cost examples).

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