We've maintained over a hundred production sites built on modern stacks -- Next.js, Astro, headless CMS setups, the works. And the single most common question we get from clients isn't about design or features. It's: "What's this going to cost me every month after launch?"

Fair question. And honestly, the answer you'll find on most agency websites is garbage. They either lowball it to close the deal or give you a range so wide it's meaningless ("$50 to $5,000/month" -- thanks, very helpful). So let's actually break this down with real numbers from real projects we've worked on in 2025 and into 2026. If you already know what you need and want to skip ahead, submit your RFP and we'll get back to you with real numbers, not hand-waving.

Table of Contents

Why Modern Stacks Change the Maintenance Equation

If you're coming from the WordPress world, you're used to a certain maintenance rhythm: update plugins, update core, pray nothing breaks, fix the thing that broke, pay for managed hosting that handles some of this for you. It's a treadmill.

Modern stacks like Next.js and Astro flip this on its head. There's no monolithic server to patch. No plugin ecosystem where a single abandoned package can torpedo your site. No database to optimize every quarter.

But here's the part people miss: they come with their own maintenance profile. You've traded one set of problems for another. Dependency updates in package.json still need attention. Your headless CMS still has a subscription fee. Serverless functions have cold starts that need monitoring. Edge network configs need tuning.

The good news? For most sites, the total cost of ownership is lower. Often significantly lower. But "lower" doesn't mean "zero," and I've seen too many teams launch a shiny Astro site and then act surprised when things need attention six months later.

The Core Cost Categories

Before we get into specific numbers, let's map out what actually costs money. Every website maintenance budget, regardless of stack, breaks down into these buckets:

  1. Hosting & Infrastructure -- Where your code runs
  2. CMS & Third-Party Services -- Content management, forms, search, analytics
  3. Security & Dependency Updates -- Keeping things patched and safe
  4. Performance Monitoring -- Making sure it stays fast
  5. Content Updates & Feature Work -- Ongoing development time
  6. Domain & SSL -- The boring stuff that still costs money

Let's go through each one.

Hosting and Infrastructure Costs

This is where modern stacks shine. A static Astro site or a Next.js app deployed to an edge platform costs a fraction of traditional hosting.

Astro Sites (Mostly Static)

If your Astro site is purely static -- and many are, that's kind of the point -- your hosting costs can be laughably low.

  • Cloudflare Pages: Free for unlimited sites, unlimited bandwidth. Yes, really. You'll pay $0/month for hosting a static Astro site on Cloudflare Pages in 2026. Their paid plan at $20/month adds web analytics and more build minutes, but most sites don't need it.
  • Netlify: Free tier covers 100GB bandwidth/month and 300 build minutes. Their Pro plan is $19/month per member. For a typical business site getting 50k-100k pageviews/month, the free tier works fine.
  • Vercel: Free for hobby use. Pro plan is $20/month per member with 1TB bandwidth.

For Astro sites using SSR (server-side rendering) via Astro's server islands or hybrid mode, you'll need a platform that supports serverless functions. Cloudflare Workers, Netlify Functions, or Vercel Serverless all work, and costs scale with usage. For most business sites, you're looking at $0-25/month.

Next.js Sites

Next.js is a different animal. Even if you're generating static pages with generateStaticParams, most Next.js sites use some dynamic features -- API routes, server components, ISR (Incremental Static Regeneration), middleware.

  • Vercel (the obvious choice): Pro plan at $20/month per team member. This is where most Next.js apps land. But watch your serverless function invocations -- the Pro plan includes 1M function invocations/month. High-traffic sites or sites with aggressive ISR can blow past this. We've seen clients hit $100-300/month on Vercel for medium-traffic e-commerce sites.
  • AWS Amplify: Pay-as-you-go model. Typically $5-50/month for standard business sites. More complex to set up than Vercel, but can be cheaper at scale.
  • Coolify / Self-hosted: If you've got the ops chops, you can run Next.js on a $20-50/month VPS. We don't recommend this for most clients -- you're trading hosting costs for ops time, and ops time isn't free.

A Note on Vercel Pricing in 2026

Vercel updated their pricing structure in late 2025, and the Enterprise tier now starts at $2,500/month. If you're on a team of 5+ developers or need advanced features like spend protection, SAML SSO, or dedicated support, that's the tier you'll land on. For most small-to-medium businesses, the Pro plan at $20/seat is fine.

CMS and Third-Party Service Costs

Your headless CMS is typically the biggest line item after hosting. Here's what the major players charge in 2026:

CMS Free Tier Pro/Team Tier Enterprise
Sanity 3 users, 100K API requests/mo $15/user/mo (Growth) Custom pricing
Contentful 1 space, 5 users $300/mo (Team) Custom pricing
Storyblok 1 user, 1 space €99/mo (Business) Custom pricing
Payload CMS Self-hosted (free) Payload Cloud from $35/mo Custom pricing
WordPress (headless) Self-hosted Managed: $25-50/mo $200+/mo
Keystatic Free (file-based) Free N/A
Decap CMS Free (Git-based) Free N/A

For our projects at Social Animal, we often recommend Sanity for headless CMS setups because the free tier is genuinely generous and the developer experience is excellent. For simple sites, file-based options like Keystatic can eliminate CMS costs entirely.

Beyond the CMS, you've got other services that add up:

  • Analytics: Plausible ($9/mo), Fathom ($14/mo), or Vercel Analytics (included in Pro)
  • Form handling: Formspree ($10/mo), or just build a serverless function
  • Search: Algolia (free up to 10K requests/mo, then $1/1K requests), or Pagefind (free, runs client-side)
  • Email/Newsletter: Resend ($20/mo for 50K emails), Mailchimp (free up to 500 contacts)
  • Image CDN: Cloudinary (free tier: 25K transformations/mo), or just use your CMS's built-in image pipeline

A realistic monthly total for third-party services on a small-to-medium business site: $30-150/month.

Security, Updates, and Dependency Management

This is where the maintenance "labor" lives. And it's the cost that most articles about website maintenance conveniently ignore because it's harder to put a number on.

Dependency Updates

We hit this at scale early on: a client's Next.js project had 137 direct dependencies, and after three months of neglect, npm audit was screaming about 14 vulnerabilities, 3 of them critical. That's a typical scenario. A Next.js project carries 50-150 direct dependencies. Astro projects usually have fewer -- maybe 20-60. Each one gets updates, and some of those updates are security patches you genuinely need to apply.

Our maintenance approach:

# We run this weekly on client projects
npm audit
npx npm-check-updates -u --target minor
npm install
npm run build
npm run test

For critical security patches, we apply them within 48 hours. For minor and major version bumps, we batch them monthly and test thoroughly.

Time investment: 2-4 hours/month for a typical site. At agency rates ($150-200/hr), that's $300-800/month.

If you're doing this yourself and you know what you're doing, you can bring this down to 1-2 hours. Tools like Renovate Bot or Dependabot can automate the PR creation, but someone still needs to review and merge.

SSL and Domain Renewal

SSL is free everywhere that matters in 2026 (Let's Encrypt, Cloudflare, Vercel, Netlify all handle this automatically). Domain renewal is $10-50/year depending on your TLD. Not worth worrying about, but don't forget to set auto-renew.

Security Headers and Configuration

This is a set-it-and-mostly-forget-it task. Content Security Policy headers, CORS configuration, rate limiting on API routes. We typically configure this during the build phase and revisit it quarterly.

// next.config.ts - Security headers example
const securityHeaders = [
  {
    key: 'X-Frame-Options',
    value: 'DENY',
  },
  {
    key: 'X-Content-Type-Options',
    value: 'nosniff',
  },
  {
    key: 'Referrer-Policy',
    value: 'strict-origin-when-cross-origin',
  },
  {
    key: 'Content-Security-Policy',
    value: "default-src 'self'; script-src 'self' 'unsafe-inline'; style-src 'self' 'unsafe-inline';",
  },
];

Time investment: 1-2 hours/quarter.

Performance Monitoring and Optimization

Launching a fast site is one thing. Keeping it fast? That's the real job. Content editors add unoptimized images. Marketing requests a new third-party script. That 95 Lighthouse score slowly creeps down to 72.

What Monitoring Costs

  • Vercel Speed Insights: Included in Pro plan ($0 extra)
  • Calibre: From $45/month for web performance monitoring
  • SpeedCurve: From $11.90/month
  • Google Search Console + PageSpeed Insights: Free, and honestly sufficient for most sites

What Optimization Work Looks Like

Every quarter, we run a performance audit on client sites:

  1. Check Core Web Vitals in Search Console
  2. Run Lighthouse CI against key pages
  3. Review bundle size with next/bundle-analyzer or Astro's built-in build output
  4. Check for layout shift regressions
  5. Review image optimization (are new images using the right formats?)

Time investment: 3-6 hours/quarter, or about 1-2 hours/month averaged out.

Content Updates and Feature Work

This is the wild card. Some clients launch a site and barely touch it. Others want weekly updates, new landing pages, blog posts that need custom components, and feature additions.

The beauty of a headless CMS setup is that content updates are usually self-service. Your marketing team logs into Sanity or Storyblok, makes changes, and the site rebuilds automatically. No developer needed for 90% of content work.

But then there's the other 10%:

  • "Can we add a pricing calculator to this page?"
  • "We need a new landing page template for our Q3 campaign"
  • "The blog needs a table of contents component"
  • "Can we integrate with HubSpot?"

This is real development work, and it varies wildly. We typically recommend clients budget 5-10 hours/month of development time for ongoing improvements. At our rates, that gives you enough runway to make meaningful improvements without breaking the bank. If you're scoping out a project right now and want clarity on what the ongoing costs will look like, send us your RFP and we'll include a maintenance estimate alongside the build quote.

Full Cost Comparison: Next.js vs Astro vs WordPress

Let's put it all together. Here's what a typical small-to-medium business site costs to maintain monthly, broken down by stack:

Cost Category Next.js (Vercel) Astro (Cloudflare) WordPress (Managed)
Hosting $20-100/mo $0-20/mo $30-100/mo
CMS $0-99/mo (Sanity/Payload) $0-99/mo (Sanity/Keystatic) $0 (built-in)
Domain + SSL ~$3/mo ~$3/mo ~$3/mo
Third-party services $30-100/mo $20-80/mo $50-150/mo (plugins)
Security/updates (labor) $300-600/mo $200-400/mo $200-500/mo
Performance monitoring $0-50/mo $0-50/mo $0-50/mo
Content updates (labor) $750-1,500/mo $750-1,500/mo $500-1,000/mo
TOTAL (with labor) $1,100-2,450/mo $975-2,150/mo $785-1,800/mo
TOTAL (DIY labor) $53-350/mo $23-250/mo $83-300/mo

A few things jump out:

  1. Labor is the biggest cost, no matter what stack you're on. Hosting and tooling are almost noise in comparison.
  2. Astro wins on infrastructure costs because static sites are basically free to host.
  3. WordPress looks cheaper on paper if you handle content updates yourself, but that comparison is misleading -- WordPress maintenance includes a constant stream of plugin updates and security patches that modern stacks simply don't have.
  4. The DIY row is for teams that handle their own development. If you've got an in-house developer, your hard costs are remarkably low.

How to Reduce Your Monthly Maintenance Bill

After years of maintaining sites on these stacks, here's what actually moves the needle on costs:

Choose Astro for Content-Heavy Sites

If your site is primarily content -- marketing pages, blog, documentation -- Astro is the better choice. It ships less JavaScript by default, which means fewer things to break, faster builds, and cheaper hosting. We've built plenty of Astro sites that cost literally $0/month to host.

Use Next.js When You Need It

If you need authentication, dynamic dashboards, complex data fetching, or heavy interactivity, Next.js is the right call. Just go in with eyes open about the infrastructure costs at scale.

Pick a CMS With a Generous Free Tier

Sanity's free tier handles most small business sites without breaking a sweat. Payload CMS is open-source and self-hostable. Keystatic is completely free for file-based content. Don't pay $300/month for Contentful when Sanity at $0/month does the same job for 90% of use cases.

Automate What You Can

Set up Renovate Bot for dependency updates. Use GitHub Actions for automated testing on every PR. Configure Lighthouse CI to catch performance regressions before they hit production.

# .github/workflows/lighthouse.yml
name: Lighthouse CI
on: pull_request
jobs:
  lighthouse:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-node@v4
        with:
          node-version: 22
      - run: npm ci && npm run build
      - uses: treosh/lighthouse-ci-action@v12
        with:
          configPath: ./lighthouserc.json
          uploadArtifacts: true

Bundle Maintenance Into a Retainer

This is self-serving advice, sure, but it's also genuinely cheaper. Ad-hoc maintenance work costs more per hour than retainer work because of context-switching overhead. A monthly retainer with an agency that knows your codebase -- like us -- typically saves 15-25% compared to piecemeal freelancer work.

Invest in Documentation During Build

The most cost-effective maintenance investment happens during the initial build. Every hour spent writing good documentation saves 3-5 hours of maintenance time down the road. We document every project with:

  • Architecture decision records
  • CMS content model guide for editors
  • Deployment and environment setup instructions
  • Third-party service credentials and renewal dates

FAQ

How much does it cost to maintain a Next.js website per month?

The hard infrastructure costs for a Next.js site in 2026 typically run $50-350/month, covering hosting on Vercel or AWS, a headless CMS subscription, and third-party services like analytics and form handling. When you factor in professional maintenance labor for dependency updates, security patches, and ongoing feature work, the total ranges from $1,100 to $2,450/month. Teams with in-house developers can bring the labor cost to zero and just pay the infrastructure fees.

Is Astro cheaper to maintain than Next.js?

Yes, generally. Astro sites have lower infrastructure costs because they produce static output by default, which can be hosted for free on Cloudflare Pages or Netlify. They also tend to have fewer dependencies, which means less maintenance overhead on updates and security patches. The difference is most pronounced on content-focused sites -- for highly dynamic applications, Next.js might be the only viable option regardless of cost.

What's the cheapest way to host a modern JavaScript website in 2026?

Cloudflare Pages is the clear winner for static sites -- it's free with unlimited bandwidth and no per-site limits. For sites that need server-side rendering or API routes, Cloudflare Workers offers a generous free tier of 100,000 requests/day. Vercel and Netlify both have free tiers as well, though they come with bandwidth and build-minute limits that growing sites will eventually outgrow.

How often do Next.js and Astro sites need updates?

We recommend checking for dependency updates weekly and applying them monthly in batches. Critical security patches should be applied within 48 hours. Next.js and Astro both release minor versions roughly monthly, and major versions annually. Unlike WordPress, you won't face a constant stream of plugin updates -- but you still need to keep your core framework and dependencies current.

Do headless CMS platforms have hidden costs?

Some do. Watch out for API request limits (Contentful and Sanity both cap these on lower tiers), asset storage limits, and per-user pricing that inflates quickly for larger teams. Sanity's free tier is generous at 100K API requests/month, but a high-traffic site with aggressive caching disabled could blow past that. Payload CMS avoids this entirely since it's self-hosted -- you just pay for the server.

Is website maintenance cheaper than WordPress for modern stacks?

It depends on how you measure it. The infrastructure costs are comparable or lower. The real savings come from reduced security risk (no PHP vulnerabilities, no plugin conflicts) and the fact that content updates are self-service through headless CMS interfaces. However, when something does break on a modern stack, you need a developer who knows React and modern JavaScript -- and those developers tend to charge more per hour than WordPress developers.

What should a website maintenance retainer include?

A good maintenance retainer for a modern stack site should cover: weekly dependency monitoring with monthly update cycles, uptime monitoring with alerting, quarterly performance audits, security header reviews, SSL and domain renewal management, CMS support for content editors, and a bank of development hours for ongoing feature work and bug fixes. Most agencies offer this in the $1,000-2,500/month range depending on site complexity. Want to know exactly what it'd cost for your site? Get a proposal in 48 hours.

Can I maintain a Next.js or Astro site myself?

Absolutely, if you're comfortable with JavaScript and the command line. The hard infrastructure costs alone are $25-250/month for most sites. You'll need to commit to running npm audit regularly, keeping your Node.js version current, monitoring your build pipeline, and staying on top of framework updates. Set up automated tools like Renovate Bot and Lighthouse CI to reduce the manual work. Where most people get into trouble is ignoring maintenance for 6-12 months and then facing a massive upgrade effort.