ZAMBO.

Direct answer

Extra meetings are scope. Price them before they happen.

A client who books call after call is rarely being rude. They are spending your hours without seeing a price, because nobody ever put one on the calendar. Here is the calm fix: sort free quick questions from billable working sessions, pick one of three clean ways to price the extras, agree it in writing before the next call, and keep a one line log so the invoice explains itself.

See the instrument first: the live demo runs one real call and hands you its verifiable receipt, no signup.

Updated October 23, 2026. The two records quoted below are real and public, with their client decision states read back from the live service on publication day.

Step 1. Sort free clarifications from billable working sessions

Not every call is a charge, and treating them all as one is what makes this conversation feel petty. Free calls answer a question about work already agreed: a two minute clarification, where a file lives, a yes or no on something inside the current stage. Billable calls do work. Decisions get made that change the plan, delivered work gets reviewed and revised live, new requests appear on the call, or the same update gets repeated for a second audience who was not on the first one. The test is what the call produces, not how long it runs: a ten minute call that approves a new direction has moved more scope than a half hour status chat inside the allowance. Sort honestly, because a client who trusts your sort trusts your invoice.

Step 2. Price the extras one of three clean ways

Pick one pricing shape and say it out loud before the next extra call. One: a stated rate past an allowance, per call or per hour, so the fifth call in a month simply costs what the agreement always said it costs. Two: a meeting allowance printed in the agreement, for example two calls a month included, with extras billed at the stated rate. Three: fold the extras into the next stage price, so a client who wants weekly working sessions buys a stage that includes them. All three work. What never works is the fourth way, the surprise invoice after a month of unpriced calls, because the client is then arguing about whether the calls were ever a charge at all, instead of just paying for time they agreed to buy.

Step 3. Send this message when the pattern starts

Send it early, while it is still friendly, the first time the extras become a pattern rather than a one off. Short, warm, and complete: it names the allowance, the rate, and the rule that extras get confirmed in writing first.

Quick note on calls, so neither of us gets a surprise later. Our agreement includes two calls a month, which covers the regular check ins. Working sessions on top of that, where we review work together or make new decisions, are billed per call at my standard session rate. I will always confirm in writing before a call counts as an extra, so nothing billable ever happens by accident. I also keep a short log of every call, the date, the length, and what we decided, and it comes with the invoice, so each line is easy to check. Happy to keep the current pace; I just want the extra sessions priced fairly for both of us.

Most clients say yes immediately, because the message gives them control: they can keep booking and pay, or keep to the allowance and pay nothing extra. The clients who push back on the message itself were never going to pay the surprise invoice either, and it is far cheaper to learn that at message stage than at invoice stage.

Step 4. Keep a one line log per call, on a record

The log is what makes the invoice line unarguable. One line per call: the date, the length, and what was decided or requested, written the same day while it is fresh. Three lines a week takes two minutes and turns a vague feeling of too many calls into a dated list the client can check against their own calendar. Where the work runs through Zambo, that log does not sit in a notebook: each stage of the job is saved as it happens, and every step carries a verifiable receipt, a receipt proving the saved result was not changed since it was saved. A handover or acceptance record then shows which calls belonged to which stage and what the client accepted, so the extra meetings line on the invoice points at records, not at your memory of a busy month.

The record format is AER-1, published as an IETF Internet-Draft (draft-zambo-aer1-26). The two public records below show the shape of a stage record a client can open and check:

Accepted: the decision is on the record

Pending: checked, and still waiting on a decision

For a call heavy job, the record gives you the facts this charge runs on: which stage each call belonged to, when it happened, and whether the client checked and accepted that stage, 4 of 4 checked and accepted on the first record, 5 of 5 checked and still pending on the second. Extras confirmed in writing before the call, logged the same day, and sitting inside an accepted stage are about as close to undisputable as an invoice line gets.

Step 5. Invoice the extras as their own line

Put the extra meetings on the invoice as a separate line, with the count and the dates, and attach the log. Never bury them inside the main fee, where they look like padding, and never round the count down out of embarrassment, because the log is either accurate or it is decoration. If the client questions a line, answer with the entry: the date, the decision made, and the written confirmation that priced it before it happened. One questioned entry answered calmly from the record usually pays the whole line, because the client can see the rest of the log is the same shape.

Step 6. Print the meeting terms in the next agreement

Prevention is three sentences in the next agreement, printed up front where nobody has to negotiate them mid job. Sentence one: how many calls are included, and in what period. Sentence two: what counts as a working session and the rate extras are billed at. Sentence three: extras are confirmed in writing before they happen, and a short log of every call comes with each invoice. A client who signs those sentences has already agreed to everything in this page, so the mid job message in step 3 becomes a polite reminder of a printed term instead of a new negotiation, and the extra meetings mostly price themselves from then on.

What a record does not settle

A verifiable receipt proves the saved result was not changed since it was saved; it does not prove a call was worth its fee, does not set your rate, and cannot make a client value a meeting they found useless. The written agreement made before the call settles whether the call was a charge. This page is general information, not legal advice.

Frequently asked questions

How do I charge a client for extra meetings and calls?

Sort the calls first, then price the billable ones, always before they happen. Quick clarifications that take a few minutes and move the agreed work forward stay free. A call where decisions get made, work gets reviewed, or new requests appear is a working session, and working sessions are scope. Price them one of three ways: a stated rate per call or per hour past an included allowance, a set number of calls included each month with extras billed, or extras folded into the price of the next stage. Tell the client which way applies, in writing, before the next extra call, and never surprise invoice for a call that was never priced. Then keep a one line log per call, date, length, and what was decided, and invoice the extras as their own line pointing at that log. A charge the client agreed to in advance, backed by a dated log, is a charge that gets paid.

Which calls are free and which ones do I bill for?

Free calls answer a question about work already agreed: a two minute clarification, where a file lives, a yes or no on something inside the current stage. Billable calls do work: decisions get made that change the plan, delivered work gets reviewed and revised live, new requests appear, or the same update gets repeated for a second audience. Length is a clue, not the rule, because a ten minute call that approves a new direction has moved more scope than a half hour status chat inside the allowance. When a free call turns into a working session, say so kindly in the moment, note it in the log, and let the written allowance and rate you already agreed do the charging, so no single call becomes an argument about money.

What if a client refuses to pay for the extra meetings?

Then the record decides what happens next, in this order. If the extras were confirmed in writing before the calls, at the stated rate, send the log with the invoice line and ask which entry they dispute; a dated log with the decisions noted is hard to argue with, and most refusals shrink to one entry. If the extras were never priced or confirmed, the honest answer is that this round is on you: you cannot fairly charge for a call the client never agreed to pay for, so collect for the agreed work, and put the allowance and the rate in writing before one more call happens. Either way, stop booking unpriced calls today. The pattern, not any single call, is the problem, and the pattern ends the moment extras need written confirmation first.

How do I stop extra meetings eating the next job?

Print the meeting terms in the agreement, before the first call. State how many calls are included, what counts as a working session, the rate for extras, and that extras are confirmed in writing before they happen. Then run the job on a record: when the work runs through Zambo, each stage is saved as it happens, the call log sits inside that stage, and a handover or acceptance record shows which calls belonged to which stage, so the extra meetings invoice line points at records, not memory. For $0.99, run the next job on a record where the calls, their dates, and the client's acceptance are saved together: get the Day Pass. A Day Pass covers 24 hours, no subscription. Ongoing use is the Zambo Pass at $29 for 30 days, one payment, or $290 for 365 days, and $19 for 30 days for $ZAMBO holders, which adds private handover links, your branding, and the approval record as PDF and JSON files.

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