Anna Post, Emily Post's great-great-granddaughter and the spokesperson for the Emily Post Institute, shares, well, tips on what to hand out when.
Waiter taking money from wallet
| Credit: Klas Fahlen/Art Department

Doorman: $2 for help with bags, $1 for a hailed cab.

Taxi Driver: Ten to 15 percent. Add an extra dollar or two if he helps with the bags.

Airport Porter: Most porters charge $2 for the first bag. If they don’t, you should pay at least that. Add a dollar or two for good service.

Other Airport Staff (Ticket Agents, Fight Attendants): Don’t tip them. It can be tempting to slip an agent a $20 bill in the hopes that you’ll get better treatment out of the deal, but that comes off as smarmy.

Bellhop: $2 for the first bag, $1 a bag after that.

Housekeeping: $2 to $5 a day. Leave this tip daily, as you often have a different person cleaning your room each day. (Leave a note so the housekeeper knows the money is for her.)

Concierge: $5 to $10 every time she helps you with something above and beyond the job description, like scoring hard-to-get tickets to a show.