You received the offer and are one step closer to securing what you came for. But one small tweak could mean the difference between a done deal and an empty hand. Send back $18,742, and the person across the table suddenly treats you like you've done this before. That's also the finding from the newest review of the Current Opinion in Psychology negotiation research: numeric precision makes you look more informed and more competent to the other side, and pulls their counteroffer closer to yours.

Poker players call the same logic ‘sizing the raise’. A raise's size is data. Too small, and it looks tentative, like you're unsure of your own hand. Too big, and it may appear you're covering for a weak one. Sized to the real strength of the hand, a raise earns respect: it's proof you’ve done the math.

You send a similar signal every time you make a counteroffer — be it on a house price, your freelance rate, monthly rent, or a business deal. The number you send back is the first argument you make, and starting strong gives you room to negotiate upward from there.

Numbers Talk — Give Them a Strong Voice

Counter a house listed at the national average of $502,700 with a flat $480,000, and the seller hears an opening bid pulled from nowhere in particular, one with plenty of room to talk you back up. Swing the other way on a freelance day rate, padding your real number of $1,180 up to a suspiciously round $1,500, and a client who's hired freelancers before will spot the cushion before you finish the sentence. Ask for "somewhere lower" on a new apartment lease instead of a figure, and the property manager has nothing on the table to consider.

Tentative or padded, both land the same way: like a guess. Those aren’t the figures the other side takes seriously.

Show Your Work First

Before you counter the price you want, pull the numbers, comps, hours, whatever the market pays, and bring that instead of rounding it into something that feels easier to say out loud.

For example, say a contractor's quote comes in at $8,400. Counter with, "Comparable jobs in this zip code ran $7,150 to $7,300 this year, so I can do $7,225 today." Maybe a longtime client asks what it'll cost to renew your monthly retainer. You could try something like, "My rate for this scope is $118 an hour, based on three contracts I closed this year at $112, $121, and $119." Same move on a hospital bill: match every line item against your insurer's allowed amount, catch any charges there were over-billed, and call back with $3,142.60 instead of the $4,380 on the page. The rep can confirm it before you hang up.

None of these numbers are round, and not one is easy for them to argue with.

The Same Move Works at Any Table Size

Raise sizing doesn't change with the size of the pot: the same math that helps you negotiate a hospital bill can price anything, no matter how many commas there are.  

Let’s say you built a company and a third party approaches you, offering  big bucks for a majority stake in your business. It's real money, more than you've ever seen next to your own name. It also means they'd call the next round of decisions. What do you do?

Using the logic above, work it out with the professionals who handle deals at that size, like a lawyer or an accountant. Send back an exact number put together by pricing the company’s revenue and then solving for the ownership stake that keeps you in control. 

Even when the dollar signs get bigger, your number is based on the same instinct running through every example here, priced up to match the table.

Round Numbers Are a Tell

Poker players read a tell as a habit that gives away more than you meant to show. A round number says you skipped the math. Run it. Then say your number out loud, the ugly, uneven, unmistakably real one. 

Nobody's ever walked away from a table because a number sounded too specific.