Promotion in the marketing mix, the five elements of the promotional mix and how to split a budget between them

The promotional mix is the set of tools a business uses to communicate, and it is the inside of one element of the wider marketing mix. The five conventional elements are advertising, sales promotion, personal selling, public relations, and direct marketing. Textbooks differ at the edges, some splitting digital and interactive marketing out as a sixth, and the differences do not matter much. What matters is that the five are good at different jobs, cost money in different shapes, and are not substitutes. Advertising buys awareness you cannot close with. Personal selling closes and does not scale. Sales promotion moves volume now and borrows it from next month. Public relations buys credibility you cannot control. Direct marketing reaches people who already know you. A budget split between them is a bet about where your buyers currently get stuck, and that is the question this page answers.

The five elements, and what each one is genuinely good at

Element	What it does well	Where it fails	Cost shape
Advertising	Reaches people who do not know you yet, at scale, with a message you control	Cannot answer a question or handle an objection	Paid per impression or click, scales up and down
Sales promotion	Moves volume inside a specific window, clears stock, triggers a trial	Trains buyers to wait for the next one, and takes margin off every unit	Comes off gross margin rather than out of a media budget
Personal selling	Handles a complex or expensive decision with several people in it	Does not scale, and the cost per conversation barely falls	Salaries and commission, a fixed cost that is slow to change
Public relations	Buys credibility, because somebody else said it	You cannot control the message, the timing or whether it happens	Retainer or in-house time, with no guaranteed output
Direct marketing	Reaches named people who already gave you permission, cheaply and repeatedly	Only as big as your list, and a list is an asset you have to build first	Low variable cost, high setup cost in data and tooling

The classic mistake is to treat these as a menu where you pick the cheapest. They sit at different points of the same journey. An audience that has never heard of you cannot be closed by email because they are not on the list. A buyer who has read everything and has one objection left is not moved by another impression.

The two questions that decide the split

Forget benchmark percentages. Two questions settle most of the allocation, and both are answerable from your own records.

Question one, where do your buyers currently get stuck. If plenty of people visit and few enquire, the problem is persuasion and proof, not reach, and more advertising makes it worse by widening the top of a funnel that already leaks. If enquiries convert well and there are too few of them, the problem is reach and the money belongs in advertising and public relations. Count the two numbers before deciding anything.

Question two, how expensive and how considered is the purchase. A high price, a long decision and several people involved pushes money toward personal selling and public relations, because somebody has to answer questions and somebody independent has to make the company credible. A low price and an impulse decision pushes money toward advertising and sales promotion, because the whole decision happens in the moment the ad is seen.

Three worked allocations

These are illustrative splits of a promotional budget, not benchmarks, and they exist to show the shape of the reasoning rather than to be copied.

• A local service business, average job of a few hundred, decided in a day. The weight goes on advertising aimed at the small number of people searching at that moment, plus direct marketing to past customers, because a repeat customer costs almost nothing to reach. Personal selling is one person answering the phone well, which is a training cost rather than a budget line. Sales promotion is kept for the quiet season only. Public relations is local, cheap and slow, and worth a few hours a month rather than a retainer.
• A business selling software to other businesses at tens of thousands a year. Most of the real spend is personal selling, and it sits in the salary budget rather than the marketing one, which is why marketing in this model looks underfunded on paper. Public relations and analyst relations buy the credibility a salesperson cannot assert about their own employer. Advertising is narrow and expensive and exists to make the salesperson's first call warm. Sales promotion barely exists, because a discount on a considered purchase mostly signals that the list price was invented.
• A consumer product sold through retailers. Two separate promotional mixes are running at once and they are often confused. One aims at the shopper, and that is advertising and in-store promotion. The other aims at the retailer's buyer, and that is personal selling plus trade promotion. A brand that funds only the first and wonders why distribution is not growing has mixed up its audiences.

Why the split goes wrong in practice

• Sales promotion gets used as a growth strategy. It works, which is the problem. Discounting lifts this month, takes margin from every unit, and teaches regular buyers to wait. Three promotions in a quarter is a pricing decision pretending to be a promotional one, and our page on price in the marketing mix covers the cross-checks that catch it.
• Public relations is bought as if it were advertising. It cannot be, because the output is somebody else's decision. Buy it for credibility over a year, judge it on whether your argument appears in other people's words, and never put a campaign deadline on it.
• Personal selling is invisible in the budget. It is usually the largest promotional cost in a business and it lives under salaries, so promotional mix discussions routinely ignore the biggest element in the mix.
• Direct marketing is started without a list. The element with the best economics is the one that needs an asset you do not have on day one. Building the list is a job for the other four elements, which is the main reason they are not substitutes.
• The five send different messages. The real value of thinking in terms of a promotional mix is consistency. If the advertising says premium and the promotion says half price every fortnight, the buyer believes the promotion.

How this fits the wider mix

Promotion is one of the four Ps, alongside Product, Price and Place, and it is the one that can only communicate decisions the other three already made. Promotion cannot rescue a product nobody wants or a price that contradicts the positioning, and a promotional plan written before those are settled gets rewritten. Our page on the marketing mix, the 4Ps, the 7Ps and a template to fill in covers the model itself and who added what to it, and place in the marketing mix works through the distribution half, which frequently dictates the promotional mix. If what you need is the promotional section of a plan document rather than the theory, the marketing mix in a business plan, with the section filled in is the worked example.

A one page way to write the promotional section

• Name the one audience this plan is for. If there are two, write two plans, because a shopper and a retail buyer need different mixes.
• Write the one sentence everything has to say. Every element then has to be consistent with it.
• State where buyers currently get stuck, with the two numbers that prove it.
• Allocate across the five elements, with a reason per line rather than a percentage per line.
• Name one measure per element, decided now. Enquiries for advertising, redemption rate and margin given away for promotion, win rate for selling, your argument appearing in other people's words for public relations, revenue per thousand sends for direct.
• Write down what you will stop doing if a measure does not move in one quarter.

Questions about the promotional mix

What is the promotional mix?

The combination of communication tools a business uses, conventionally advertising, sales promotion, personal selling, public relations and direct marketing. It is the detail inside the Promotion element of the marketing mix.

How many elements are there?

Five in the conventional treatment. Some texts add digital or interactive marketing as a sixth, and others fold it into direct marketing. Choose one convention and keep it consistent inside your own plan.

How do I decide the split between them?

Start from where buyers currently get stuck, which your own enquiry and conversion numbers will tell you, and from how expensive and considered the purchase is. Reach problems move money to advertising and public relations. Persuasion problems move it to selling, proof and public relations.

Is digital marketing part of the promotional mix?

Yes, and it is not a sixth element so much as a set of channels the existing elements run through. Paid search is advertising. An email programme is direct marketing. An influencer partnership sits between advertising and public relations depending on who controls the message.

Is public relations worth paying for?

It is the only element that buys credibility, because somebody independent is saying it. It is also the only one with no guaranteed output, so fund it over a year on a credibility objective and never against a campaign deadline.

What is the difference between advertising and sales promotion?

Advertising buys attention and comes out of a media budget. Sales promotion buys action inside a window and comes out of gross margin. They feel similar in a plan and hit completely different lines in the accounts.

The sixth element nobody has a budget line for

There is a communication channel now that fits none of the five and is not funded by anybody. A buyer types a question into an assistant, something like who are the best suppliers of this in my area, and gets back two or three company names with a sentence of justification each. That is a recommendation delivered at the moment of choice, which is what personal selling is for, with the credibility of a third party, which is what public relations is for, at no cost, to an audience nobody bid on. It is assembled from whatever has been published about each company, which means it is being driven right now by your old pages, your listings and what other people have written, and the companies named in it are frequently not the ones with the largest promotional budget in the category. The cheapest useful thing a marketer can do about it this quarter is to ask the buying question in two or three assistants, leaving their own company name out of the prompt so the answer is not primed, and write down which names came back. Whatever the split in the plan, that reading tells you whether the five elements are reaching the moment the decision actually gets made.