Internal vs external recruitment: which is right for Boise employers?

Internal vs external recruitment comes down to one question: where does your next hire come from? Internal recruitment fills a vacancy with someone who already works for you, and external recruitment brings in a new employee from outside the company.

Internal or external, both work. Neither works every time, and picking the wrong one for a role can cost you months.

If you run a growing team in Boise, you have probably lived this. Your best coordinator wants the manager job, the market has a candidate with ten more years of experience, and nobody has time to run a proper search.

This guide covers the advantages and disadvantages of internal and external recruiting, what the research says about people hired from outside, and the best practices for running the search once you decide to look outside.

What is the difference between internal and external recruitment?

Internal recruitment is the process of filling an open position from your current workforce through a promotion, a lateral transfer or an internal posting. External recruiting finds new talent outside the organization through job boards, referrals, direct outreach or recruitment agencies.

An internal applicant already works for you. An external applicant does not, so you are fishing in a much bigger talent pool and it takes more effort to find the best fit.

Here is how internal recruitment methods and external recruitment methods compare side by side:

Among recruiting methods, employee referral programs sit somewhere in between. The candidate is external, but your current employees do the sourcing, which is why referrals often bring in people who already understand how you work.

What are the advantages of internal recruitment?

When you hire from within, you get a known performer who gets up to speed faster and usually costs less to bring in. Those strengths are easy to underrate when you are excited about a shiny outside candidate.

• You know what you are getting. You have seen how your internal talent handles pressure, clients and Monday mornings.
• It is usually faster. No job postings, no sourcing, and a much shorter hiring process.
• Onboarding is lighter. Internal hires already know your tools, your customers and your quirks.
• It helps you keep people. When people see a path upward, they have a reason to stay.
• It protects your culture. Internal mobility keeps institutional knowledge inside the business.

Employers are leaning into it. Internal mobility, meaning lateral moves and promotions within the same company, rose 6 percent year over year (LinkedIn, 2024).

Keeping people is the reason. 88 percent of organizations say they are concerned about keeping employees, and learning opportunities are their top retention strategy (LinkedIn, 2025).

What are the disadvantages of internal recruitment?

The internal talent pool is small, and every promotion opens a second seat you still have to fill. It can also leave skills gaps in place and upset the people who were passed over.

• The talent pool is tiny. At a 30-person company, you might have one realistic internal candidate, or none.
• You create a second opening. Every promotion leaves a seat behind.
• Passed-over employees can check out. If three people apply and one gets the job, you have two conversations to handle well.
• You miss fresh perspectives. When you only recruit internally, you tend to reinforce the way things are already done.
• Skills gaps stay gaps. If nobody on the team has done the work before, a promotion will not change that on day one.

Effective internal recruitment depends on preparation. It works best when you have been training people to step into future roles, and if you have not, your bench may simply not be ready yet.

What are the advantages of external recruitment over internal recruitment?

Effective external recruitment gives you a far larger pool and brings in skills and experience your team does not have yet. It is also the only way to add headcount rather than reshuffle it.

• A bigger pool of external applicants. You are choosing from the market, not just your org chart.
• New skills and experience. An external candidate can bring expertise nobody inside has built yet.
• Fresh perspectives. Someone who has seen how three other companies solve a problem will question habits your team no longer notices.
• Room to grow headcount. If the business is growing, you need more people, not just reshuffled ones.

The research backs part of this. People hired from outside often arrive with more education and experience than internal candidates, and those who stay past two years are promoted faster than internal movers (Wharton, 2012).

For most roles, outside hiring is the norm rather than the exception. The median share of nonexecutive positions filled externally rose from 93 percent to 97 percent (SHRM, 2026).

What are the disadvantages of external recruitment?

The cons of external hiring are risk, cost and time. When hiring external candidates, you make the decision on interviews and references rather than years of observed work, and you usually pay more for it.

In research led by Matthew Bidwell at Wharton, people hired from outside were paid about 18 to 20 percent more than internal staff in similar jobs, got lower performance evaluations in their first two years, and left at higher rates (Wharton, 2012).

The core data came from one U.S. investment banking division between 2003 and 2009, and the same pattern showed up in a second bank and a publishing company (Wharton, 2012). Treat it as a strong signal rather than a law.

If you have ever paid a premium for an outside candidate who left in month nine, it will sound familiar, and the true cost of a bad hire goes well beyond the salary.

External recruitment also takes real bandwidth. Across the entire recruitment process, writing the job description, screening applicants, running interviews and chasing references all land on people who already have full-time jobs.

What do the numbers show on external and internal recruitment?

The numbers point both ways: external hires cost more and start slower, yet almost every nonexecutive role is still filled from outside. The useful takeaway for your hiring decision is that every outside hire has to be worth its premium.

• Cost per hire. The average is $5,475 for a nonexecutive role and $35,879 for an executive one (SHRM, 2025).
• Time to fill. The median is 39 calendar days for nonexecutive positions (SHRM, 2026).
• Share filled externally. A median 97 percent of nonexecutive positions (SHRM, 2026).
• Pay premium for outside hires. About 18 to 20 percent (Wharton, 2012).
• Internal mobility. Up 6 percent year over year (LinkedIn, 2024).

The wider market explains why outside hiring is hard. US employers had 7.3 million job openings in July 2026 while quits held at 3.1 million (BLS, 2026).

People also stay put. Median tenure with a current employer was 3.9 years (BLS, 2024), so the person you want is usually employed and not browsing job boards.

An empty seat has a cost too. Projects slow, your best people pick up the slack, and some of them start watching for opportunities of their own. Run the numbers with our cost per hire calculator before you decide.

Is it better to hire internally or externally?

Neither option is better across the board. The best recruitment decisions weigh the pros and cons of internal promotion against an outside search for each role, and for most small and mid-sized employers the answer is a blend of internal and external hiring decided hire by hire.

Before you choose between internal recruitment strategies and an external recruitment strategy, ask yourself these questions:

• Is there a potential internal candidate who could do this new role well within a few months?
• Does the open seat create a critical gap in a core business function?
• Does the role need skills or experience your team does not have?
• Are you hoping the new hire will shift the culture or bring a new way of working?
• Can your team cover the work until it is filled?
• If you promote, can you backfill the old job without a crisis?

If the first answer is yes and the rest point the same way, promote. If the role needs something new, or nobody is ready, look outside.

The best hiring strategy borrows from both sides, and employers who hire well share a few habits:

• Post internally first, with a deadline. Give every internal employee a real shot, then open the search to outside talent if nobody fits.
• Interview internal applicants properly. Same questions, same bar, and honest feedback if they do not get it.
• Hire externally for skills gaps. Bring in outside talent where the team needs something new.
• Plan the backfill before you promote. Know how you will cover the old role before you announce the new one.

Considering internal candidates first is rarely a mistake, as long as you are honest about whether they are ready. The right balance between internal and external talent will shift as you grow.

How does the Boise talent pool affect choosing between internal and external hires?

Boise is a mid-sized market where wages sit below the national average but are climbing fast. That makes outside hiring harder than it looks, because the candidates you want are employed and getting raises.

The Boise metro labor force reached 457,514 in 2025 (BVEP, 2025). That is a decent-sized market, but not one where you can post a job and expect a flood of qualified candidates.

Boise workers earn a mean $31.02 an hour against $33.54 nationally, about 7.5 percent below the US mean (BLS OEWS, 2026). Ada County wages are rising 7.9 percent a year, about twice the national pace (BLS QCEW, 2026).

Pay expectations vary within the Valley, too. The average yearly wage was $70,582 in Ada County and $51,909 in Canyon County in 2024 (BVEP, 2025), so a salary that looks competitive in Nampa may not move someone in downtown Boise.

In our searches we see the same thing: the right outside candidate usually has to be found rather than waited for.

Should you run the external search in house or use a recruiter?

Keep it in house when you hire the same role often and someone has time to run it properly. Bring in a search partner when the role is senior, specialized or urgent, or when the best candidates are not applying anywhere.

In house recruiting means a hiring manager or HR lead writes the job description, posts it, screens applicants and books interviews. It works well when:

• You hire for the same type of role often and already know where those candidates are.
• Someone on your team has time to give the search real attention.
• The role attracts plenty of qualified applicants on its own.

Where in house recruitment efforts tend to struggle is capacity. When the search slows, good candidates do not wait. They take another offer, and you start over.

Outsourced recruiting means a search partner runs some or all of the process. A good partner spends most of the week talking to people who are not looking, which is how you recruit passive candidates who never see your job postings.

It does not mean giving up control. You still define the role, set the bar and make the final call, while your partner handles sourcing, screening and keeping candidates warm.

RNG Group is a Boise recruiting firm that fills full-time, direct-hire roles only, from entry level to the C-suite, across Idaho and the Mountain West. Employers pay a percentage of the new hire’s first-year salary or a flat fee, and it is always free for candidates. Our explainer on what direct hire means covers how that differs from temp staffing.

Frequently asked questions

What does internal vs external applicant mean?

An internal applicant is a current employee applying for one of the company’s other internal roles, such as a promotion or a transfer. An external applicant is anyone applying from outside the organization.

Can you give me an example of internal recruiting?

A sales rep who has been with you three years applies for an open sales manager role through an internal posting and gets promoted. That is internal recruitment, and it is the most common form.

Do external hires get paid more?

Often, yes. One study found people hired from outside were paid about 18 to 20 percent more than internal staff in similar roles (Wharton, 2012).

Is internal recruitment cheaper than external recruitment?

Usually, because compared to external recruitment you skip advertising and sourcing, and onboarding is shorter. Remember to count the cost of backfilling the job your internal hire leaves behind.

Ready to look outside?

If the role is critical, hard to fill or senior, or your team does not have time to run the search, we can help. Talk to our team about your next hire.

Filed under: Recruiting