I have accepted an offer with 30% higher pay compared to my current job in January. Before the new company give me the offer letter, I have negotiated the salary during verbal discussion and they have agreed to my proposal.
Last week another company offered me few hundred Ringgit/4% higher than the accepted offer. Should I renegotiate the salary with the new company to match this offer? Would the new company retract the offer if I nego again?
I am more keen on working in the new company as the career progression is better.

Dont ruin your rep before even going into the new company. Hiring manager wont appreciate this. Enjoy the 30%.

take letter from a company then nego with B company then go back A company nego for higher salary...
if I am A company, I will just retract the offer, why let people threaten?

Thanks for the advise. I also think it is not good to do it this way. Will stick with the 30% offer.

in 1st place why did your current co suddenly offer u 30% hike?

is it because of promotion?

or did u resign and they counter offer you?

Not my current company. It is new company.

Good choice...just go enjoy the 30%. Dont have to be so greedy for 4%.

Aiya just enjoy the 30% lah

don't be greedy for anothre 5%

i'm on your shoe currently but unless the company B offer more than 15% else will just stick back company A offer.

Call and ask the recruiter/HR to see how receptive they might be to this idea.

You should know in this case your leverage probably isn’t as high as you think - if you’re working in company A, a company B has offered X amount and company C has offered XX amount, why are you asking company B to match company C when you can just accept C if salary is what’s important ?

My point is, if you’re asking this to B, they probably guess that you’re more interested in them anyway. Of course if they really want you then a few hundred RM isn’t going to be an issue

Just take the 30% one first...

Later jump with another 30% few years down the road 🔥

Put yourself in the hiring manager / HR shoes of the new company.

Unless they were aware beforehand that you're interviewing with another company and expecting an offer from them, it's going to look bad on you.

You accepted their offer with no caveat.

If I was the hiring manager, I would 100% not accept a negotiation for increment on bad faith, and depending if I could get another candidate, I will even push HR to retract the offer.