Reading time: about eight minutes. Last reviewed September 2026.
First decide the mode
Interpretation is delivered in several ways, and the choice is driven by the setting rather than by cost. Getting it wrong is the most common booking error.
Consecutive
The speaker says a few sentences, pauses, and the interpreter renders them. It roughly doubles the time a conversation takes and it is the most accurate mode for detailed exchanges, because the interpreter hears a complete thought before rendering it and can ask for a repetition. Use it for depositions, witness testimony, medical consultations, interviews, and any meeting where precision matters more than pace.
Simultaneous
The interpreter renders continuously while the speaker keeps talking, a few seconds behind. It preserves the natural flow of an event but demands intense concentration, which is why simultaneous interpreters work in pairs and swap roughly every 20 to 30 minutes on long assignments. Use it for conferences, multi party proceedings, training events and any session where stopping for consecutive rendering would be impractical. It usually needs equipment: a booth or a portable system with headsets.
Video remote
The interpreter joins by video. It gives you visual context, facial expression and gesture, which matters for clinical assessment and for any exchange where a nod or a wince carries information. It is fast to arrange, often within minutes for common languages, and it avoids travel time and cost. It depends on a stable connection and a camera positioned so the interpreter can see the person speaking.
Over the phone
Audio only, and the quickest to arrange, often connecting within minutes. Ideal for short unscheduled exchanges: a triage call, a helpline, a service desk, a pharmacy query. It is the weakest mode for anything visual, anything involving documents on a table, or any exchange with more than two or three participants.
On site
The interpreter attends in person. Use it where the setting requires physical presence: court hearings where the judge expects an interpreter at the table, physical examinations, site inspections, signings, and any situation involving a person who is distressed, elderly or unfamiliar with remote technology. It needs the most notice, typically several days, and more for less common languages.
Understand the credential labels
The words certified and qualified are not interchangeable, and providers are not always careful about the difference.
- Court certified. The interpreter has passed a formal examination administered by a court system and appears on its roster. The examination tests simultaneous, consecutive and sight translation under time pressure, and pass rates are low. Certification exists for a limited set of languages, because a certifying body must build and maintain an exam for each one.
- Court qualified or registered. For languages with no certification exam, courts maintain a category for interpreters who have met training, ethics and screening requirements. This is not a lesser interpreter; it reflects that no exam exists in that language. For many African, Asian and indigenous languages it is the highest available status.
- Medically certified. The interpreter has passed a healthcare interpreting examination covering clinical terminology, ethics, and the specific hazards of interpreting in care settings. Distinct from court certification and not a substitute for it.
- Bilingual. Not a credential. Speaking two languages fluently is a prerequisite for interpreting, not evidence of the ability to do it. Interpreting is a trained skill involving memory, note taking, register control and ethical discipline.
Ask which category applies to the person being assigned, and ask it before the booking is confirmed rather than on the day.
What to send before the assignment
This is where clients gain the most and spend the least. An interpreter who has prepared performs measurably better, and preparation material costs you nothing but a few minutes.
- The subject and setting. What kind of proceeding or appointment, who will be present, and roughly how long it will run.
- Names and spellings. Parties, witnesses, clinicians, companies and places. An interpreter who has seen the names will not stumble over them in the room.
- Terminology. Technical, clinical or industry specific terms, product names, and any acronym you use internally.
- Documents that will be referred to. Prior filings, a case caption, a treatment plan, an agenda, slides. The interpreter does not need every page, only what will be discussed.
- Language variety and background. Not just Arabic, but which country the speaker is from. Not just Spanish, but which region. This is often the difference between a smooth session and constant clarification.
- Anything sensitive. If the subject matter is traumatic, tell the interpreter beforehand so they are not encountering it cold in front of a vulnerable person.
Material sent for preparation is covered by the interpreter's confidentiality obligations in the same way as any other client file.
What an interpreter will and will not do
Professional interpreters follow a code of ethics, and knowing its boundaries prevents frustration in the room.
- They interpret everything. Including asides, insults, hesitations and statements that reflect badly on the speaker. An interpreter who filters is not doing the job.
- They speak in the first person. The interpreter says "I saw the car", not "he says he saw the car", because the interpreted utterance belongs to the speaker.
- They do not summarise. If you ask for the gist, you are asking for something other than interpretation.
- They do not advise. An interpreter will not explain what a question means, suggest an answer, or tell a patient what a diagnosis implies. That is the clinician's or the attorney's role.
- They are impartial. They do not take sides, and they declare any prior connection to a party.
- They will interrupt to clarify. A brief request for a repetition or a clarification is a sign of a careful interpreter, not a struggling one.
Remote or in person
Remote interpretation has improved to the point where it is the right default for a large share of assignments. It is faster to arrange, available in more languages, and removes travel cost. Choose in person when the setting is formal and physical presence is expected, when the participant is distressed or unfamiliar with the technology, when documents will be handled around a table, or when the connection at the venue cannot be relied on. Choose remote when speed matters, when the language is rare enough that no local interpreter exists, or when the exchange is short.
What drives the cost
Without quoting figures, the variables are consistent across the industry: the mode, the language and how many qualified interpreters work in it, the length of the session and any minimum booking, how much notice you give, whether travel is involved, whether the subject requires a certified specialist, and whether the session needs two interpreters, as long simultaneous assignments do. Booking earlier and sending preparation material are the two things within your control that most reduce cost.
A booking checklist
- Mode chosen to fit the setting, not the budget
- Language and regional variety confirmed with the speaker, not assumed
- Credential category confirmed for the person being assigned
- Notice given: minutes for phone, hours for video, several days for on site
- Preparation pack sent: names, terminology, documents, subject matter
- Session length estimated honestly, including likely overrun
- Two interpreters booked for long simultaneous work
- Everyone briefed to speak in short turns and address each other, not the interpreter
What we do
Layaab provides court certified and court qualified interpreters for judicial settings and medically trained interpreters for clinical ones, across on site, video remote, over the phone, simultaneous and consecutive modes, with 24/7 availability for urgent legal and medical requests. See legal and court interpretation or medical translation and interpretation for how each works.
Read next: preparing documents for translation.
This guide is general information about engaging interpreters, not legal or clinical advice. Court requirements vary by jurisdiction and healthcare obligations vary by setting.