SiteGround to Kinsta Migration — Hidden Costs, Real Numbers, Honest Verdict

Last Verified: April 2026  |  Author: FBWH Editorial Team

Pricing sourced directly from SiteGround and Kinsta pricing pages — April 2026. Migration steps verified against both hosts' official documentation.

The moment most SiteGround customers start looking at Kinsta is the renewal invoice. SiteGround has the largest promotional-to-renewal price jump of any major shared host — the StartUp plan goes from $3.99/month to $17.99/month at renewal, a 4.5× increase. That number lands in your inbox and suddenly Kinsta at $35/month looks less like a premium and more like a reasonable option.

This article gives you the honest numbers — what Kinsta actually costs over three years compared to SiteGround, what you get for the difference, what costs are genuinely hidden in the migration, and whether the move makes sense for your specific situation.

The Renewal Shock — What Prompted This Decision

SiteGround's promotional pricing is among the most aggressive in shared hosting — and their renewal pricing is the most aggressive too. The gap between what you paid initially and what renewal costs is the steepest of any major host.

The reframe that changes the decision: at SiteGround GrowBig renewal ($29.99/month), Kinsta Starter at $35/month is only $5/month more. For a single site, the choice is no longer shared hosting versus managed WordPress — it is two managed-tier price points with very different infrastructure behind them.

The Real Price Comparison — Three Years, Honest Numbers

Monthly rates obscure the real comparison. Here is what each option costs over three years — the period that matters for evaluating a hosting decision.

The three-year gap between SiteGround StartUp and Kinsta Starter is $781. That is the real premium you are evaluating — not $17/month, but $781 over three years. For a site generating meaningful revenue, that number needs to be weighed against what Kinsta's infrastructure delivers in terms of performance, reliability, and eliminated risk.

The Cloudways comparison is worth noting: at $22/month on DigitalOcean 2GB, Cloudways over three years ($792) is nearly identical to SiteGround GrowBig renewal pricing ($800) — but with real cloud infrastructure, Redis and Varnish caching, and no renewal price trap. That comparison is examined in section 8.

What You Actually Get for the Price Difference

SiteGround is genuinely good shared hosting — LiteSpeed servers, NVMe storage, strong support, and a clean dashboard. The reason to leave is not that SiteGround is bad. It is that at renewal pricing, the value proposition has shifted and alternatives at comparable price points offer meaningfully better infrastructure.

Infrastructure comparison

The headline difference is resource isolation. SiteGround runs on Google Cloud infrastructure — the same underlying cloud as Kinsta — but on shared server resources. A traffic spike from a neighbouring site on the same server affects your site. Kinsta's isolated containers mean your resources are yours alone. Under concurrent load — which is when hosting performance matters most — this is the architectural difference that produces the TTFB and stability gap between the two.

The Hidden Costs Nobody Mentions

The Kinsta price is visible. These costs are not — and they change the real comparison significantly.

Email hosting — the biggest hidden cost

SiteGround includes email hosting on all plans — @yourdomain.com mailboxes, webmail access, spam filtering. Kinsta does not include email hosting. When you migrate to Kinsta, you need to set up email independently.

The options and their costs: Google Workspace starts at $6/user/month. Zoho Mail has a free plan for up to 5 users (adequate for most small businesses). Microsoft 365 Business Basic starts at $6/user/month. For a business with 3–5 email accounts, add $18–30/month to the Kinsta cost for a fair comparison. For a personal site with no business email requirement, this cost is zero.

Multiple sites — Kinsta's per-site pricing model

SiteGround GrowBig and GoGeek include unlimited WordPress installations. Kinsta prices per site — Starter covers 1 site, Pro covers 2 sites at $70/month, Business 1 covers 5 sites at $115/month. If you are running 3 sites on SiteGround GrowBig at $29.99/month renewal, the equivalent Kinsta coverage (Business 1 at $115/month) changes the comparison dramatically.

For multi-site SiteGround users, Cloudways is often the more appropriate comparison — one server at $22–42/month can host unlimited applications, and the per-site cost drops as you add sites.

SiteGround CDN vs Kinsta CDN

SiteGround's CDN is a Cloudflare reseller product — it provides basic CDN functionality but not the full Cloudflare feature set. Kinsta includes Cloudflare CDN on all plans, with more complete integration. The difference is meaningful for sites with global audiences. For a site with predominantly local traffic, both provide adequate static asset delivery and the difference is minimal.

The staging workflow change

SiteGround's staging on GrowBig and GoGeek plans works well. Kinsta's staging environment is more capable — one-click push to live, selective push options, staging password protection. The workflow change is not a cost but it is an operational adjustment that takes a session or two to get comfortable with. Factor this into your team's migration timeline if multiple people manage the site.

What Breaks When You Migrate From SiteGround

SiteGround has a specific infrastructure that creates predictable migration issues. These are the SiteGround-specific breakpoints — not generic WordPress migration problems.

SiteGround Optimizer plugin

SiteGround installs their Optimizer plugin on all hosted WordPress sites — it handles caching, image optimisation, and performance features tuned specifically for SiteGround's infrastructure. On Kinsta, this plugin is non-functional and should be deactivated and deleted immediately after migration. Replace its caching function with Kinsta's server-level caching (which is automatic) and a standalone image optimisation plugin if needed.

SiteGround email migrates separately

As covered in the hidden costs section — SiteGround email is entirely separate from WordPress hosting. Moving your WordPress site to Kinsta does not move your email. Your @yourdomain.com mailboxes stay on SiteGround's mail servers as long as your MX records point there. You can keep SiteGround email running independently of your hosting — or migrate email to Google Workspace or Zoho first, then migrate hosting.

Caching reconfiguration

SiteGround's LiteSpeed Cache and their Optimizer plugin handle caching in a specific way. On Kinsta, server-level caching is automatic — you do not need a caching plugin. Disable and delete any SiteGround-specific caching plugins after migration, and verify that Kinsta's cache is working correctly by checking response headers for a cache HIT indicator on your key pages.

PHP version and custom configuration

SiteGround allows PHP version selection and some custom PHP configuration via their dashboard. Note your current PHP version before migrating — Kinsta's dashboard lets you set PHP version per site, and matching your existing version prevents unexpected plugin compatibility issues immediately after migration. Upgrade to PHP 8.3 after confirming stability, not simultaneously with the migration.

Pre-Migration Checklist

• Export full backup — files and database from SiteGround's backup tool or via All-in-One WP Migration plugin
• Document all DNS records — A, CNAME, MX, TXT records including SPF, DKIM, DMARC
• Set up email independently — Google Workspace, Zoho Mail, or Microsoft 365 — before touching DNS
• Note PHP version — match it exactly on Kinsta initially
• Lower DNS TTL to 300 seconds — 48 hours before migration date
• Identify SiteGround-specific plugins — SiteGround Optimizer, SiteGround Security — mark for deletion post-migration
• Test staging on new host — verify every page type, form, and WooCommerce flow before DNS cutover
• Keep SiteGround account active — for 48 hours after DNS cutover as rollback safety net

The Migration — Step by Step

Step 1 — Use Kinsta's free migration service

Kinsta includes free migrations for new accounts — their team handles file and database transfer from SiteGround. Contact Kinsta support after account creation and provide your SiteGround SFTP credentials and database details. For most SiteGround sites under 2GB, their team completes the migration within 24 hours. This is the lowest-friction path and handles the SiteGround-specific configuration correctly.

If you prefer to migrate manually: export your SiteGround database via phpMyAdmin, download all files via SFTP, upload to Kinsta via SFTP (credentials in MyKinsta under Sites → SFTP/SSH), and import the database via Kinsta's phpMyAdmin tool. Update wp-config.php with Kinsta's database credentials.

Step 2 — Configure and verify on staging URL

Kinsta provides a staging URL (yoursite.kinsta.cloud) before you point your real domain. Use it fully. Check every page type, run a WooCommerce test order if applicable, test all contact forms, verify images load, confirm JavaScript-dependent features work. Specifically: deactivate and delete SiteGround Optimizer and any other SiteGround-specific plugins, verify Kinsta's server-level caching is active (check response headers for X-Kinsta-Cache: HIT), confirm PHP version matches your SiteGround setup.

Step 3 — Set up email on the new provider

Before touching DNS, confirm your email is working on the new provider — Google Workspace, Zoho, or Microsoft 365. Update MX records to point to the new email provider. Wait for propagation (up to 48 hours with standard TTL, 5 minutes with TTL lowered to 300 seconds). Send and receive test emails from every mailbox. Only proceed to hosting DNS cutover after email is confirmed working independently.

Step 4 — DNS cutover

Add your domain in Kinsta's MyKinsta dashboard under Domains, and install the SSL certificate. Change your A record to Kinsta's IP address (shown in MyKinsta under Sites → Domains). With TTL at 300 seconds, the change propagates globally within minutes. Monitor the site in real time — load from browser with cache cleared, check from mobile, verify SSL is active. Keep SiteGround hosting active for 48 hours as rollback insurance.

Step 5 — Post-migration SEO checks

Open Google Search Console immediately after DNS cutover and monitor for 24–48 hours. Watch for 404 errors in the Coverage report — any missing URL needs a 301 redirect created immediately. Check Core Web Vitals in 48–72 hours — expect improvement when moving from SiteGround shared to Kinsta isolated containers. Submit your sitemap if it is not already registered.

Honest Verdict — Who Should Move, Who Should Not

Move to Kinsta if:

• You have one site generating revenue — ecommerce, leads, services, advertising
• You are on SiteGround StartUp or GrowBig renewal and the price jump has made you re-evaluate
• You run WooCommerce and need Redis object caching — not included on SiteGround
• You want predictable flat pricing with no future renewal shock
• Performance consistency under load matters — isolated containers vs shared resources

Consider Cloudways instead if:

• You run multiple sites — Cloudways hosts unlimited sites on one server, Kinsta charges per site
• Budget is the primary constraint — Cloudways from $12/month vs Kinsta from $35/month
• You or your team are technically comfortable with more configuration

Stay on SiteGround if:

• Your site is a personal blog or portfolio with no revenue — the renewal price is high but the performance upgrade does not have an ROI
• You rely heavily on SiteGround's included email hosting and are not ready to migrate email separately
• You are mid-term on a prepaid SiteGround contract — finish the term, then migrate

FAQ

Does Kinsta include free migration from SiteGround?

Yes — Kinsta includes free migrations for new accounts. Their team handles the transfer from SiteGround including files and database. Contact Kinsta support after account creation with your SiteGround SFTP credentials and they manage the process. Most migrations complete within 24 hours.

Will I lose my SiteGround email when I migrate to Kinsta?

Not automatically — your SiteGround email keeps working as long as your MX records still point to SiteGround's mail servers. But Kinsta does not provide email hosting, so you need to set up a separate email provider (Google Workspace, Zoho Mail) and migrate your mailboxes before closing your SiteGround account. This is the most important pre-migration task and the most commonly missed.

Is SiteGround GrowBig comparable to Kinsta Starter?

At renewal pricing ($29.99/month vs $35/month), they are in the same price bracket — but the infrastructure is fundamentally different. SiteGround GrowBig is shared hosting on Google Cloud. Kinsta Starter is managed WordPress on isolated Google Cloud C3D containers with Redis. The $5/month gap at renewal pricing makes Kinsta the stronger value at that tier for sites where performance matters.

Can I host multiple WordPress sites on Kinsta at the same price as SiteGround GrowBig?

Not directly — Kinsta's Starter plan covers 1 site, Pro covers 2 sites ($70/month), Business 1 covers 5 sites ($115/month). If you are running multiple sites on SiteGround GrowBig's unlimited installations, Kinsta's per-site model is more expensive for multi-site setups. Cloudways at $22–42/month hosts unlimited sites on one server and is the more appropriate comparison for multi-site users.

How long does SiteGround to Kinsta migration take?

Using Kinsta's free migration service: typically 24 hours from when you provide credentials. Manual migration of a standard WordPress site under 1GB: 3–5 hours including staging verification. Budget a full day including pre-migration checklist, email setup, and post-migration GSC monitoring.

Will my Google rankings be affected by migrating from SiteGround to Kinsta?

Not if URL structure is preserved and caching is configured correctly on Kinsta. A brief 1–3 position fluctuation in the first week is normal as Google re-crawls the migrated site. Sites moving from SiteGround shared hosting to Kinsta isolated containers typically see Core Web Vitals improvements — particularly LCP — which produce ranking improvements over 4–6 weeks.

Is there a cheaper alternative to Kinsta for SiteGround refugees?

Yes — Cloudways on DigitalOcean 2GB at $22/month. Real cloud infrastructure, Redis and Varnish caching, flat pricing, unlimited sites on one server. More configuration than Kinsta but significantly cheaper for multi-site users or budget-conscious single-site operators. Hostinger Business at $8.99/month renewal is the best shared hosting alternative if managed cloud is not required.

Related Reading

• Leaving WP Engine — How to Migrate Without Losing Rankings or Traffic
• GoDaddy to Cloudways — What Breaks and How to Fix It
• The Real Cost of Web Hosting — Renewal Prices Ranked From Worst to Best
• Kinsta Full Review 2026

Image Credits & Data Sources

SiteGround pricing: siteground.com/wordpress-hosting — verified April 2026. Kinsta pricing: kinsta.com/wordpress-hosting — verified April 2026. Cloudways pricing: cloudways.com/pricing — verified April 2026. Kinsta infrastructure documentation: kinsta.com/knowledgebase/migrate-to-kinsta.