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Best Managed IT Service Providers in Rancho Santa Margarita, CA (2026)

669 managed IT service providers ranked by IFR ScoreUpdated 0 paid placements in this rankingHow we rank →

The short answer

  1. 1

    Best overall in Rancho Santa Margarita: Annansys, IFR Score 66/100; 4.9★ from 713 Google reviews.

  2. 3

    Most-reviewed: Sam's IT Solutions, 497 Google reviews at 5.0★, the most of 669 ranked after Annansys; ranked #3.

Rankings can't be bought. IT providers can't pay to change their rank or score. How we rank

669 Rancho Santa Margarita managed IT service providers are ranked here by IFR Score, from nine published factors. 268 open Saturdays and 165 open Sundays, based on posted hours. The median Google rating is 5.0★ across 669 rated IT firms.

Top 10 managed IT service providers in Rancho Santa Margarita at a glance

Ranked by IFR Score from public data. Sponsored placements are labelled and never change the order.

Top 10 managed IT service providers in Rancho Santa Margarita at a glance
RankBusinessIFR ScoreGoogle ratingBased inHoursBest for
1Annansys664.9★ (713)Chino Hills, 23 mi away—Overall
2Forum Info-Tech665.0★ (173)Corona, 14 mi awaySat · Sun · Evenings—
3Sam's IT Solutions655.0★ (497)Pasadena, 46 mi awaySat · Sun · EveningsMost reviews
4QuickMountTV™ - Your Trusted TV Mounting & Smart Home Experts!655.0★ (144)Laguna Beach, 20 mi awaySat · Sun · Evenings—
5Tech Expert Guys654.9★ (241)Irvine, 14 mi awaySat · Sun—
6Intelecis Cyber Security Company Irvine655.0★ (87)Irvine, 10 mi awaySat · Sun · Evenings—
7Burgi Technologies | Managed IT & Cybersecurity645.0★ (75)Tustin, 13 mi awaySat · Sun · Evenings—
8Technijian644.7★ (87)Irvine, 8 mi awaySat · Sun · Evenings—
9Tech Guardian644.9★ (87)Lake Elsinore, 16 mi awaySat · Sun · Evenings—
10CAL IT Group - Managed IT Services635.0★ (69)Huntington Beach, 23 mi awaySat · Sun · Evenings—

The 669 best managed IT service providers in Rancho Santa Margarita, ranked

Ordered by IFR Score, a 0–100 score from nine published factors. Paid placement never changes the order.

Ranked by IFR Score from public data. Sponsored placements are labelled and never change the order.

  1. Ranked #1 in Rancho Santa Margarita

    Based in Chino Hills, 23 mi away

    66/100IFR Score

    Ranked #1 because of its Google rating and service focus: 4.9★ from 713 Google reviews, listed on Google as “Computer support and services”.

    Based on 7 of 9 factors; recency and availability not yet collected.

    • 4.9★ from 713 Google reviews
    Address
    15970 Los Serranos Country Club Dr #115, Chino Hills, CA 91709
  2. Based in Corona, 14 mi away

    66/100IFR Score

    Ranked #2 because of its Google rating and service focus: 5.0★ from 173 Google reviews, listed on Google as “Computer support and services”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 173 Google reviews
    Hours
    Mon–Sun 12 AM–12 AM
    Address
    160 W Foothill Pkwy Ste 105-231, Corona, CA 92882
  3. Based in Pasadena, 46 mi away

    65/100IFR Score

    Ranked #3 because of its Google rating and service focus: 5.0★ from 497 Google reviews, listed on Google as “Computer support and services”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 497 Google reviews
    Hours
    Mon–Sun 12 AM–12 AM
    Address
    35 N Lake Ave #710, Pasadena, CA 91101
  4. Based in Irvine, 14 mi away

    65/100IFR Score

    Ranked #5 because of its Google rating and service focus: 4.9★ from 241 Google reviews, listed on Google as “Computer support and services”.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.9★ from 241 Google reviews
    Hours
    Mon–Fri 9 AM–6 PM · Sat–Sun 12 PM–4 PM
    Address
    20 Corporate Park Ste:118, Irvine, CA 92606
  5. Based in Irvine, 8 mi away

    64/100IFR Score

    Ranked #8 because of its Google rating and service focus: 4.7★ from 87 Google reviews, listed on Google as “Computer support and services”.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.7★ from 87 Google reviews
    Hours
    Mon–Sun 12 AM–12 AM
    Address
    18 Technology Dr #141, Irvine, CA 92618
  6. Based in Lake Elsinore, 16 mi away

    64/100IFR Score

    Ranked #9 because of its Google rating and service focus: 4.9★ from 87 Google reviews, listed on Google as “Computer support and services”.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.9★ from 87 Google reviews
    Hours
    Mon–Sun 12 AM–12 AM
    Address
    600 Central Ave Ste A, Lake Elsinore, CA 92530
  7. 62/100IFR Score

    Ranked #11 because of its Google rating and service focus: 5.0★ from 35 Google reviews, listed on Google as “Computer support and services”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 35 Google reviews
    Hours
    Mon–Sun 12 AM–12 AM
    Address
    1340 Reynolds Ave #116, Irvine, CA 92614
  8. Based in Riverside, 21 mi away

    62/100IFR Score

    Ranked #12 because of its Google rating and service focus: 4.9★ from 85 Google reviews, listed on Google as “Computer support and services”.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.9★ from 85 Google reviews
    Hours
    Mon–Thu 6 AM–10 PM · Fri 6 AM–5:30 PM · Sat 6 PM–10 PM · Sun 8 AM–6 PM
    Address
    9067 Cleveland Ave, Riverside, CA 92503
  9. Based in Anaheim, 19 mi away

    62/100IFR Score

    Ranked #13 because of its Google rating and service focus: 4.8★ from 47 Google reviews, listed on Google as “Computer support and services”.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.8★ from 47 Google reviews
    Hours
    Mon–Sun 12 AM–12 AM
    Address
    5101 E La Palma Ave, Anaheim, CA 92807
  10. 61/100IFR Score

    Ranked #14 because of its Google rating and service focus: 5.0★ from 45 Google reviews, listed on Google as “Computer support and services”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 45 Google reviews
    Hours
    Mon–Fri 6 AM–10 PM · Sat–Sun 8 AM–10 PM
    Address
    20 Corporate Park #350, Irvine, CA 92606
  11. 61/100IFR Score

    Ranked #16 because of its Google rating and service focus: 5.0★ from 17 Google reviews, listed on Google as “Computer support and services”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 17 Google reviews
    Hours
    Mon–Sun 12 AM–12 AM
    Address
    200 Spectrum Center Dr Ste 300, Irvine, CA 92618
  12. Based in Temecula, 28 mi away

    61/100IFR Score

    Ranked #17 because of its Google rating and service focus: 5.0★ from 38 Google reviews, listed on Google as “Computer support and services”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 38 Google reviews
    Hours
    Mon–Sun 12 AM–12 AM
    Address
    27555 Ynez Rd Ste 110, Temecula, CA 92591
  13. #19 TechMD

    Based in Santa Ana, 18 mi away

    61/100IFR Score

    Ranked #19 because of its Google rating and service focus: 4.9★ from 134 Google reviews, listed on Google as “Computer support and services”.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.9★ from 134 Google reviews
    Hours
    Mon–Fri 6 AM–6 PM · Sat–Sun closed
    Address
    3750 S Susan St, Santa Ana, CA 92704
  14. Based in Pasadena, 46 mi away

    60/100IFR Score

    Ranked #20 because of its Google rating and service focus: 4.9★ from 85 Google reviews, listed on Google as “Computer support and services”.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.9★ from 85 Google reviews
    Hours
    Mon–Sun 12 AM–12 AM
    Address
    150 S Los Robles Ave #400, Pasadena, CA 91101
  15. Based in Irvine, 10 mi away

    60/100IFR Score

    Ranked #21 because of its Google rating and service focus: 4.8★ from 115 Google reviews, listed on Google as “Computer support and services”.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.8★ from 115 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    140 Progress Ste 250, Irvine, CA 92618
  16. Based in Carlsbad, 42 mi away

    60/100IFR Score

    Ranked #23 because of its Google rating and service focus: 5.0★ from 160 Google reviews, listed on Google as “Computer support and services”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 160 Google reviews
    Hours
    Mon–Fri 8 AM–7 PM · Sat 9 AM–4 PM · Sun closed
    Address
    1700 Aviara Pkwy Unit 130474, Carlsbad, CA 92013
  17. Based in Irvine, 15 mi away

    60/100IFR Score

    Ranked #24 because of its Google rating and service focus: 5.0★ from 17 Google reviews, listed on Google as “Computer support and services”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 17 Google reviews
    Hours
    Mon–Sun 12 AM–12 AM
    Address
    2030 Main St #1300, Irvine, CA 92614
  18. 60/100IFR Score

    Ranked #25 because of its Google rating and service focus: 4.9★ from 39 Google reviews, listed on Google as “Computer support and services”.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.9★ from 39 Google reviews
    Hours
    Mon–Sun 12 AM–12 AM
    Address
    903 E 1st St, Long Beach, CA 90802

Managed IT service providers ranked #26 to #50

#1 to #25 are shown in full above. Here are #26 to #50, in IFR Score order; each links to its profile. We publish the top 50 of 669 ranked managed IT service providers here; the rest are on their profiles.

managed IT service providers in Rancho Santa Margarita, ranks 26 to 50
RankBusinessIFR ScoreGoogle ratingDistance
26It Can Be Fixed604.2★ (319)39 mi
27BRITECITY605.0★ (89)15 mi
28TechHeights - Business IT Services Orange County605.0★ (13)12 mi
29Computech IT services604.9★ (71)7 mi
30Trinity Networx, LLC | Managed IT Services & Support Ontario, California605.0★ (26)29 mi
31Rancho Santa Margarita, CA605.0★ (15)5 mi
32SugarShot: IT Support Los Angeles594.9★ (56)47 mi
33Compunet Technologies, Inc.595.0★ (41)In Rancho Santa Margarita
34Mac-Fusion594.2★ (81)13 mi
35Towtle Tech595.0★ (31)16 mi
36Onsite Computing, Inc. IT Services, Cybersecurity, Cloud, VoIP595.0★ (63)17 mi
37Kumo Cloud Solutions | Managed IT Services & Unified Communications Solutions594.9★ (55)8 mi
38WeissTech, Inc.595.0★ (51)13 mi
39IDOTECH594.6★ (189)38 mi
40Integrity Tech | Managed IT Services595.0★ (109)31 mi
41Productive IT Solutions595.0★ (49)24 mi
42Alpha Computers, Inc.594.9★ (74)16 mi
43ProTechtion IT595.0★ (18)8 mi
44CentraLink - Irvine Advisory and IT Services Company595.0★ (9)15 mi
45MyCleanID594.5★ (68)46 mi
46PNR Consulting Services595.0★ (11)6 mi
47Computer Pro2call594.9★ (175)37 mi
48Textron Technologies594.8★ (146)30 mi
49Relion - Managed IT Services & Business IT Support595.0★ (97)30 mi
50KME (Formerly Active IT Solutions) - Riverside Managed IT Services585.0★ (88)28 mi

Also serving Rancho Santa Margarita

20 more managed IT service providers within 50 mi that we can't rank yet: too few reviews, or a service we couldn't confirm. Listed A to Z.

Unranked managed IT service providers serving Rancho Santa Margarita
BusinessGoogle ratingDistance
After Hours Support Services4.5★ (2)7 mi
CFOCrewIn Rancho Santa Margarita
CSP Networks5.0★ (2)8 mi
Digital Widgets, LLCIn Rancho Santa Margarita
Linutech Solutions5.0★ (2)9 mi
Logarta LLC5.0★ (2)9 mi
Marquis Network Solutions5.0★ (2)7 mi
MICROPAC TECHNOLOGIES5.0★ (2)8 mi
Netserve Systems Inc5.0★ (2)8 mi
Predictive Technologies, Inc.In Rancho Santa Margarita
Premier SolutionsIn Rancho Santa Margarita
Quick Fixing Center5.0★ (95)In Rancho Santa Margarita
Socal Network Consulting (OutSourced IT Solutions)In Rancho Santa Margarita
Southland Computer Services5.0★ (4)In Rancho Santa Margarita
SteadITechIn Rancho Santa Margarita
SynoForce5.0★ (2)7 mi
TeamLogic IT3.0★ (2)6 mi
The Network CompanyIn Rancho Santa Margarita
TPI West Inc.In Rancho Santa Margarita
Tritek Solutions, IncIn Rancho Santa Margarita

How we ranked Rancho Santa Margarita managed IT service providers

We scored 669 Rancho Santa Margarita managed IT service providers on nine factors, weighted as shown. An IT firm is ranked when its service is confirmed and it has 3 or more Google reviews or a claimed profile. An IT firm with no Google reviews scores zero on rating, review volume and recency. Other unknown factors are left out, not counted as zero. Scores last refreshed November 9, 2026.

Paid placement never changes a rank or score. Sponsored businesses are paid, labelled, limited to 3 and shown above the ranking, outside it.

Read the full method: formula, sources and exclusions

IFR Score factors and weights
FactorWeightComputed fromIn Rancho Santa Margarita data
Reputation25%Google star rating, adjusted for how many reviews back itMeasured
Review volume15%Number of Google reviews, compared with the most-reviewed IT firm on the listMeasured
Recency10%Share of reviews from the last 12 monthsNot yet collected
Availability5%Weekly open hours, Saturday, Sunday and 24/7 supportMeasured
Service focus15%How clearly the firm does this service (its Google category and name)Measured
Proximity5%Based in the city scores highest, less the farther away it isMeasured
Claimed profile10%The firm has claimed its IT Firms Ranked profile (free or paid earn the same)Measured
Partnered5%The firm links to IT Firms Ranked from its own website with our badge, checked periodicallyMeasured
Client reviews10%Verified client reviews collected by IT Firms Ranked: their rating and how many there areMeasured

How to choose a managed IT service provider

  1. Ask for a sample service-level agreement and compare response times, support hours and exclusions.
  2. Check how backups are done and tested, and ask when they last restored a client’s data.
  3. Ask which security tools are included and which cost extra (MFA, endpoint protection, email filtering, staff training).
  4. Make sure you, not the firm, own your accounts, domain names and licences.
  5. Ask for two or three references from clients of your size and industry, and call them.
  6. Get the scope, response times and price in writing before you sign, including how you leave and get your data back.

Questions to ask a managed IT service provider

  • Is the price per user, per device or a bundle, and what is not included?
  • What are your response times for urgent, normal and low-priority tickets?
  • Is your help desk in-house or outsourced, and what are its hours?
  • How do you back up our data, how often do you test restores, and where are the copies kept?
  • Which security tools are included, and do you monitor alerts after hours?
  • What happens to our passwords, documentation and data if we leave?
  • Can you give us references from clients of our size and industry?

Terms explained

MSP (managed service provider)
A firm that runs a business’s IT for a recurring fee: monitoring, patching, help desk, backups and security tools.
Co-managed IT
An arrangement where an outside firm supports an in-house IT person or team, sharing tools and tasks.
Break-fix
IT support paid per incident or per hour, with no monthly agreement.
SLA (service-level agreement)
The contract terms for response and resolution times, uptime and support hours.
Help desk
The support line staff call or email for IT problems.
RMM
Remote monitoring and management software that lets an IT firm watch, patch and fix computers remotely.
vCIO
A virtual chief information officer: part-time IT strategy and budgeting from an outside firm.
MSSP
A managed security service provider: a firm that monitors and manages security tools around the clock.
EDR / MDR
Endpoint detection and response software, and the managed service of people watching its alerts (managed detection and response).
MFA
Multi-factor authentication: a second proof of identity, such as an app prompt, on top of a password.
Penetration test
An authorised, simulated attack on your systems to find weaknesses before criminals do.
SOC 2
An independent auditor’s report (AICPA standard) on a service provider’s security controls.

Managed IT service providers in Rancho Santa Margarita: frequently asked questions

Who is the best managed IT service provider in Rancho Santa Margarita?

By IFR Score, the highest-ranked managed IT service provider in Rancho Santa Margarita, CA is Annansys with an IFR Score of 66/100. It has 4.9★ from 713 Google reviews. Forum Info-Tech (#2) and Sam's IT Solutions (#3) follow. We ranked 669 managed IT service providers on nine factors, last updated November 9, 2026.

How many managed IT service providers are there in Rancho Santa Margarita?

ITFirmsRanked ranks 669 managed IT service providers serving Rancho Santa Margarita, CA. 1 of them is based in Rancho Santa Margarita; the rest serve it from nearby towns. Another 20 within 50 mi are listed but not ranked yet. Counts are as of November 2026.

Which managed IT service providers in Rancho Santa Margarita work on weekends?

268 of 669 ranked managed IT service providers post Saturday hours and 165 post Sunday hours. The highest-ranked open Saturdays are Forum Info-Tech (#2), Sam's IT Solutions (#3) and QuickMountTV™ - Your Trusted TV Mounting & Smart Home Experts! (#4). Posted hours are office hours; many firms also run an after-hours support line for contract clients.

What Google rating do Rancho Santa Margarita managed IT service providers have?

The median Google rating among 669 rated managed IT service providers in Rancho Santa Margarita is 5.0★, with a median of 13 reviews. Annansys has the most, 713 reviews, and ranks #1. We adjust ratings for review count, so a few five-star reviews cannot top the list.

How does ITFirmsRanked rank managed IT service providers?

Each managed IT service provider gets a 0–100 IFR Score from nine published factors, led by reputation (25%), review volume (15%), service focus (15%) and recency (10%). An IT firm with no Google reviews scores zero on rating, review volume and recency; other factors we cannot measure are left out. Only IT firms with a confirmed service and 3 or more reviews, or a claimed profile, are ranked.

Do managed IT service providers outside Rancho Santa Margarita count in this ranking?

Yes, if they are within 50 mi of the Rancho Santa Margarita city center, our service radius for managed IT service providers. Each listing shows where the IT firm is based and how far away it is. Proximity is 5% of the IFR Score, so a nearby IT firm gets a small edge.

Can managed IT service providers pay to rank higher on ITFirmsRanked?

No. The IFR Score never reads payment status, and this ranking has 0 paid placements. Up to 3 Featured IT firms may appear above the list, labelled Sponsored and showing their honest rank.

What does a managed IT service provider do?

Managed IT service providers (MSPs) run a business’s computers, servers, network, Microsoft 365 or Google accounts, backups and help desk for a monthly fee, or provide IT support by the hour.

How are managed it service providers in Rancho Santa Margarita ranked?

By IFR Score: Google rating and review volume, recent reviews, opening hours, how clearly the firm does managed IT services and IT support, distance, a claimed profile, our badge and verified client reviews. Sponsored placements never change the order.

What should a managed IT agreement include?

At minimum: help desk support for your staff, monitoring and patching of computers and servers, backups that are tested, security tools such as endpoint protection and multi-factor authentication, and a named contact. The agreement should state response times, support hours and what counts as out of scope.

Is managed IT priced per user or per device?

Both models are common, and some firms sell tiered bundles. Per-user pricing suits staff with several devices; per-device pricing suits shared computers. Compare quotes on the same number of users, devices and servers.

How long are managed IT contracts?

Often one to three years, sometimes month to month. Check the notice period, any early-termination fee and how the firm hands over passwords, documentation and data when the contract ends.

Update log for Rancho Santa Margarita

  1. November 2026: IFR Scores recalculated for 669 managed IT service providers serving Rancho Santa Margarita.
  2. November 2026: 5 duplicate listings merged.