The short answer
For most small businesses, three to five posts a week is the range that works. Fewer than three and people forget you exist between posts. More than five and the quality usually drops, because there is still a business to run.
But the number matters less than the word behind it: every week. An account that posts four times a week for a year beats an account that posts every day for three weeks and then goes quiet for two months. Instagram rewards the steady one, and so do your customers.
Why consistency beats volume
People follow a business to hear from it. When you go silent, the follow turns into a dead line in their feed, and the next time you post, fewer of them see it. Steady posting keeps that line alive.
There is also a simpler reason. A customer who checks your page before visiting wants to see that you are open and active. A last post from March tells them you might have closed. A post from yesterday tells them the door is open.
A weekly rhythm you can actually keep
Pick fixed days and stick to them. For example: Monday, Wednesday, Friday, plus one extra when something good happens. Fixed days remove the daily question of whether to post today.
Give each day a job. Monday shows something new: a product, a menu change, a delivery. Wednesday shows the work: a repair, a before and after, the process. Friday gives a reason to come in: an offer, an event, the weekend hours. Now you never start from a blank page.
Stories are the place for the small daily stuff. A quick photo of the morning setup or a customer smiling does not need a full post. Stories keep you visible on the days between posts without the pressure of making something polished.
What time of day to post
Post when your customers have their phone in their hand and a reason to think about you. For a cafe that is early morning. For a restaurant, late afternoon before dinner plans are made. For a salon, the evening when people book for the week.
After a month, open your Instagram insights and look at when your followers are most active. Move your posts toward those hours. The general advice on the internet is a starting point, your own numbers are the answer.
How to keep it up without living on your phone
The owners who stay consistent do not post in the moment. They plan the week in one sitting, usually Sunday evening or Monday morning, and schedule everything. Twenty minutes once a week replaces the daily scramble.
Batch the photos too. When something good happens during the week, take three pictures, not one, and save them in a folder. By planning day you already have more material than slots.
This is exactly the job Postspool takes off your hands. It reads what your business is, plans the week, writes each caption in your voice, makes the image and publishes at the right hour. You approve on Monday and the week runs by itself.