The decision to turn down a job offer is not one to be taken lightly. If, however, you know it's not the job for you, how do you go about tactfully saying no? It could be that you'd never wanted it in the first place, that you've decided to keep looking or that you've been made a better offer. No matter the reason, it's important to remain polite and professional in your refusal.
Declining a job offer is best done by phone, as it's more personal than simply dropping them an email. Start by offering heartfelt appreciation and thanks for the offer. Yes, it's their job to sift through candidates, but recruiting is hard work and you don't know what went on behind the scenes. For all you know, the person offering you the job may have had to persuade colleagues you should be their number one choice. It's important you show your appreciation, you may need their help again later in your career. .
Secondly, provide them with a brief but valid reason. For example, 'Upon reflection, I've decided this is perhaps not the right time for me to leave my present position', or 'After careful consideration, I've decided to accept a role with a different company'.
Finally, don't close the doors on any future communication. You never know when an even better role might become vacant at their organisation, and you don't want to have alienated them. Round off the conversation on a positive note, wishing them all the best or saying you hope your paths will cross in future. Be polite and pleasant, and there'll be no offence caused.
Decline by telephone
Offer genuine appreciation and thanks
Provide a brief, good reason
Be open to staying in touch