How Doctor Referral Payouts Work in Diagnostic Labs (2026)

What a referral payout actually is

Strip away the paperwork and a referral payout is a simple idea: someone sent a diagnostic lab a test, and the lab owes them a commission for it. The complexity is entirely in the mechanics: which tests count, at what rate, for which payee, over what period, and how you prove the number is right.

A payout is only correct if three things are true: the commission was calculated from the tests that were actually billed in the period, at the rule agreed for that specific payee, and net of anything that was later cancelled or refunded. Get any one of those wrong and the amount you pay stops matching reality: which is exactly what happens when the whole process lives in someone's head or a spreadsheet.

The players, and how each is legitimate

"Referral payout" covers several different relationships, and they are not all the same in the eyes of medical ethics regulation. It is worth being precise about who is on the other end of each payment:

Referring doctor / consultant. A registered medical practitioner can legitimately be paid for professional services rendered to the lab (for example, reporting or consulting work). What is not legitimate is paying a prescribing doctor a per-patient cut simply for sending you the test. More on this below.
Collection centre. A centre that draws samples and sends them to your lab for processing is an ordinary business-to-business arrangement: you are paying for the sample-collection service it performed, not for a referral.
Outside lab. When you outsource a test you don't run in-house, the outside lab is being paid for the test it actually processed. This is a standard vendor payment, structurally identical to any other service you buy in.

The common thread across all three legitimate cases is that the payment is for a defined service rendered, documented in a written arrangement, with a clear basis for the amount, not an undisclosed cut for directing a patient somewhere.

Is paying the referring doctor directly legal?

This is the part worth getting right before building any payout process around it. Under the Indian Medical Council (Professional Conduct, Etiquette and Ethics) Regulations, 2002 (Regulation 6.4), a registered medical practitioner may not give or receive a commission or kickback in exchange for referring, recommending or procuring patients (often called "cut practice"), and the National Medical Commission, which now oversees medical ethics, has reiterated the position. Paying a prescribing doctor a straight per-patient cut for sending you tests falls on the wrong side of that line.

What is legitimate is paying for a service actually rendered: a consultant pathologist for reporting, a collection centre for the samples it brought in, an outside lab for the tests it processed. The practical takeaway is to build your payout process around these relationships, with a written arrangement and a clear, auditable basis for every payment. (This is general information, not legal advice: have your specific arrangements reviewed by a professional.)

How commission is set: per test, flat vs. percentage

Once you know who can legitimately be paid, the next question is how much. In practice almost every lab uses one of two structures, applied per test:

Flat commission per test: a fixed rupee amount for a given test, regardless of the bill value. Simple to explain, easy to audit.
Percentage commission per test: a share of the test's billed price. Scales naturally with your price list, but needs to be calculated precisely at the moment of billing to avoid rounding drift across hundreds of line items in a month.

Either way, the rule needs to be set per test, per payee: a collection centre and a consultant might earn different rates on the same test, and a single payee might have different rates across different tests. A rule engine that stores this per-test, per-payee combination is what lets the rest of the cycle run without manual lookup. You can get a feel for the numbers with our free referral commission calculator, which estimates a monthly payout under flat and percentage rules.

The monthly cycle: accrue, reconcile, deduct TDS, settle

However the rule is set, the payout itself follows the same four-step cycle every period:

Accrue as billed. Each time a test is billed, the commission for its payee is computed immediately, using that test's rule, and stored against the bill. This is the step manual processes usually skip until month-end. That is exactly where drift creeps in.
Reconcile against bills. At period-end, the payout for each payee is simply the sum of the commission line items stored against their bills. If a test was cancelled or refunded, its commission comes out automatically because it was never a separate, disconnected number.
Deduct TDS. Commission and brokerage payments in India generally attract TDS under Section 194H of the Income-tax Act (commonly 10%, subject to the prevailing threshold and rate). The lab making the payment is responsible for deducting, depositing and reporting it, so each payee's record needs a gross amount, TDS deducted, and net paid. (General information, not tax advice: confirm the current rate and threshold with your accountant.)
Settle. Every payee for the period is paid in one pass, with a record of what they were paid and why, rather than one-off transfers trickling out over the following week.

Where it breaks when done by hand

Every step above is straightforward on paper and painful in practice when it is reconstructed manually at month-end. A register or spreadsheet has no native link back to individual bills, so a cancelled test's commission has to be remembered and manually removed, and it usually isn't. A doctor who disputes an amount has nothing to point to except someone's memory of a busy month. And because TDS, gross and net figures are calculated by hand across dozens of payees, small rounding errors compound quietly until the numbers no longer add up to anything an accountant can reconcile cleanly.

None of this is a discipline problem. It is what happens whenever a calculation that needs to happen hundreds of times a month is done outside the system that generated the underlying bills in the first place.

What "good" looks like

The fix is structural, not procedural: compute each commission at the moment the test is billed, store it against that bill, and let the payout for the period be the sum of those stored line items. Reconciliation stops being a month-end project and becomes a byproduct of the way the numbers were generated. From there, settling everyone (referring consultants, collection centres and outside labs) becomes a single run instead of a string of separate transfers.

This is the exact gap HealthFlow's Pay-Run closes: you set a commission rule per test, per payee (flat or percentage), and the commission is computed automatically as each test is billed, stored in integer paise so nothing rounds away across a busy month. At period-end, one Pay-Run settles referring doctors, consultants, collection centres and outside labs together, with a WhatsApp payslip to each payee, a printable statement, and a full Excel export, and the owner dashboard shows net revenue after commissions, live. Automatic doctor-referral payouts are part of a higher plan.

See how HealthFlow's Pay-Run settles referral commissions →

Frequently asked questions

What exactly is a referral payout?

It is the commission a diagnostic lab owes to whoever sent it a test: a consultant pathologist, a collection centre, or an outside lab it outsourced a test to. The amount is set by a rule per test (flat or percentage) and is only correct if it is calculated from the tests that were actually billed to that payee, net of anything cancelled or refunded.

Is it legal to pay a referring doctor for sending patients?

Not if the doctor is a prescribing practitioner being paid a per-patient cut for the referral itself. That is restricted under the Indian Medical Council (Professional Conduct, Etiquette and Ethics) Regulations, 2002, Regulation 6.4, and is generally called "cut practice." Ordinary business-to-business payments are different: paying an outside laboratory for tests it processed, a collection centre for samples it collected, or a consultant for reporting work are legitimate commercial arrangements. This is general information, not legal advice: have your specific arrangements reviewed by a professional.

Why do manual referral payouts go wrong so often?

Because the payout and the bill it is based on live in different places: a register or spreadsheet on one side, the billing system on the other. When a test is cancelled or refunded after the commission was noted down, nobody reliably goes back to correct it. The fix is structural: compute the commission at the moment the test is billed and store it against that bill, so the numbers always tie out and a single settlement run can clear everyone at once.

How doctor referral payouts actually work