Coparenting Advice

BIFF Response Examples for Co-Parenting Texts

The short version

BIFF means brief, informative, friendly and firm. Use a short reply to communicate the relevant fact, request or decision without adding a personal argument. The examples are fictional starting points: check the details and your responsibilities, then choose what to send.

You have already rewritten the pickup reply three times. Each version answers the question, then adds a sentence about how unfair the accusation was. That last sentence opens another argument.

A BIFF response gives you a shorter job: communicate the parenting information and leave the personal argument out. BIFF does not require agreement, a long explanation or pretending that the message felt fine.

What BIFF means

Bill Eddy’s framework is brief, informative, friendly and firm. The High Conflict Institute’s original guide explains the four parts and why some hostile exchanges need no reply while others need a factual correction.

In our interview with Bill Eddy, the speaker turn beginning 07:21 includes:

“I talked about brief, informative, friendly, and firm.”

He goes on to discuss why trying to teach the other person a lesson can backfire. This is commentary on his communication framework, not an evaluation or endorsement of BestInterest.

For a parenting text, use the framework this way:

  • Brief: include what this exchange needs, without a history of the relationship.
  • Informative: state the fact, request or decision accurately.
  • Friendly: use a courteous, non-sarcastic tone; one small acknowledgment can be enough.
  • Firm: make your position or next step clear. If you need a decision, ask for it directly.

Before using a sample reply

All messages below are fictional, editor-written illustrations, not customer conversations or recorded AI outputs. Use the wording only if the facts, your availability and the applicable arrangements fit. A proposed schedule change remains a proposal until it is properly agreed or otherwise authorized.

1. A late pickup

Incoming: “Stop making a fuss. I’m running 20 minutes late for the 5 p.m. pickup.”

Reply to work from: “Thanks for the update. I can stay at the school entrance until 5:30 p.m. Please let me know if you expect to arrive after that.”

What the reply does: states your availability and asks for the missing arrival information. It does not excuse the delay or announce a consequence you have not chosen.

Check before sending: can you stay until 5:30, and what do your arrangements require if the delay is longer?

2. A schedule change you cannot accept

Incoming: “I’m changing Sunday pickup from 10 to 11. Don’t make this difficult.”

Reply to work from: “I cannot agree to 11 on Sunday. I will be at the school entrance for the scheduled 10 a.m. pickup. Thank you.”

What the reply does: clearly declines the proposed change without explaining the other parent’s motives or adding a personal criticism.

Check before sending: confirm the scheduled time and location. If you are open to another option, name that option as a proposal rather than implying it has been accepted.

3. An expense request without a receipt

Incoming: “Sam’s medicine cost $45. Send me $22.50 by Friday. You always make everything about money.”

Reply to work from: “Please send the receipt for Sam’s medicine so I can check the expense against our reimbursement arrangement. Thank you.”

What the reply does: asks for the information needed to decide. It does not assume that half is owed, promise a Friday payment or argue about the accusation.

Check before sending: if a response or payment deadline already applies, address it. Asking for a receipt does not itself extend that deadline.

4. A school update wrapped in blame

Incoming: “You never tell me anything. What time is the school meeting?”

Reply to work from: “The school meeting is Thursday at 4 p.m. in Room 6. I have attached the school’s notice.”

What the reply does: supplies the information requested. It does not add a sentence about how many times you already sent it.

Check before sending: verify the notice and attach it. Do not claim an attachment is included if you have not added it.

5. An accusation about a parenting event

Incoming: “You didn’t take Sam to the appointment. You never follow through.”

Reply to work from, if accurate: “Sam attended the appointment at 3 p.m. Tuesday. The visit summary is attached.”

What the reply does: corrects the relevant fact and points to a source without litigating the word “never.” You do not have to answer every accusation to correct one material error.

Check before sending: confirm the attendance, time, document and any restrictions on sharing it. If the statement is not true, do not use the example.

6. Repeated demands before your answer is ready

Incoming: “Answer me.” “Are you ignoring me?” “I need to know about next month’s trip.”

Reply to work from: “I am checking the proposed dates. I will reply about the trip by 7 p.m. tomorrow.”

What the reply does: gives a specific next step without accepting the trip or promising an answer you cannot provide.

Check before sending: make sure that timing fits any actual decision deadline or required response window. A repeated demand is not the only factor in deciding urgency.

7. A personal comment with no parenting task

Incoming: “Your new haircut is ridiculous.”

Choice: no reply to that comment.

What the choice does: leaves a personal argument outside the parenting exchange. First check whether there is a separate parenting question, factual correction or response requirement you still need to address. No response is an option, not a rule for every difficult message.

How BIFF differs from grey rock

Both approaches keep you out of an emotional back-and-forth, but they give you different handles on the reply. BIFF emphasizes the shape of a clear, courteous message. Grey rock emphasizes minimal emotional engagement and often uses one-word answers.

“Can you confirm the 5 p.m. pickup at the school entrance?” can receive a complete “Yes.” A question asking which time works needs the time. You do not need to turn every acknowledgment into a paragraph to use either approach.

Review your reply before sending

Check five things: the parenting question, the facts, the decision you are making, any response requirement, and the sentence you can remove without losing useful information. If a reply promises a payment, an attachment or a new time, make sure that is a choice you actually intend.

Coparent Coach gives you a private place to paste an exchange or upload a screenshot and work through a draft. Free includes three sessions each day. Tone Guardian on Protect and Protect Plus reviews outgoing drafts and offers optional wording; you decide what to send. Message Shield on those plans works on incoming messages and preserves the originals.

If threats or retaliation make changing your response risky, get appropriate support for the situation. A communication technique does not determine someone else’s behavior.

Try private coaching free when you want a clearer starting point for the next reply.

Frequently asked questions

What does BIFF stand for in co-parenting communication?

BIFF stands for brief, informative, friendly and firm. Bill Eddy developed the framework for responding to hostile written communication. It gives your reply a clear purpose without adding personal attacks, defenses or another argument.

How do I reply to an insulting co-parenting text using BIFF?

Identify the parenting question, then answer it with the relevant fact, time, place or next step. Leave personal judgments out of the reply. For a pickup you can make, a fictional example is: “Thanks for confirming. I can collect Sam at 5 on Friday at the school entrance.”

Does a BIFF response mean I have agreed to a schedule change?

No. You can use BIFF to accept, decline or ask about a proposal. Make your decision explicit. A courteous acknowledgment such as “Thanks for letting me know” does not clearly state whether you accept a new time, so add the actual answer and keep any required arrangement in view.

Should a BIFF reply promise reimbursement by a particular date?

Only state a payment commitment if you have checked the receipt, the amount, the applicable arrangement and what you intend to do. If those details are missing, ask for them. A suggested reply should not invent an obligation, amount or deadline.

When can I choose not to respond?

Leave a personal comment unanswered when it contains no parenting question, factual issue or response requirement. First check for required responses, important factual inaccuracies, child-related information or a deadline. Do not treat silence as a universal rule; some exchanges need a brief factual correction or acknowledgment.

Will BIFF stop a co-parent from sending hostile messages?

A BIFF reply keeps your own message focused; it cannot control another person’s response. If hostile follow-ups continue, keep any necessary parenting information and required response windows available. Threats or safety concerns need appropriate support beyond a reply technique.