A custom WordPress plugin usually costs between $500 and $20,000+, according to market cost guides. Basic plugins cost $500 to $2,000, plugins that connect a form or a third-party API cost $2,000 to $7,000, and advanced plugins with payments or heavy admin screens cost $7,000 to $20,000+ (WPWeb Elite). US agencies quote higher, from $5,000 to $50,000+ (WisdmLabs). Where your plugin lands depends less on how much code it needs and more on what it has to talk to. Payment gateways, outside APIs and WooCommerce checkout logic are what push the price up.
This post is about cost. If you haven't decided whether a plugin is the right answer at all, read When should you build a custom WordPress plugin? first. Below I go through the market ranges, then match each tier to a plugin I've built, so you can see what each price band actually buys.
How much does a custom WordPress plugin cost?
Market guides put a basic custom WordPress plugin at $500 to $2,000, an intermediate plugin at $2,000 to $7,000 and an advanced plugin at $7,000 to $20,000+. Agency pages quote higher bands, so make sure you're comparing like with like.
$500–$2k
Basic plugin: widget, shortcode, small tweak
$2k–$7k
Intermediate: forms, custom post types, third-party APIs
$7k–$20k+
Advanced: payments, real-time data, big admin screens
Those three tiers come from WPWeb Elite's cost guide. Other cost guides draw the lines in different places:
| Source | Simple plugin | Complex plugin |
|---|---|---|
| WPWeb Elite | $500–$2,000 | $7,000–$20,000+ |
| FreshySites | $500–$2,000 | $5,000–$20,000+ |
| FatLab cost guide | $2,000–$3,000 | $4,000–$6,000+ |
| FatLab plugin page | $5,000–$10,000 | $15,000–$50,000+ |
| Tribulant | $200–$2,000 | $5,000–$10,000+ |
FatLab's two pages don't even agree with each other. That's normal for agencies: their price covers discovery, project management and overhead, not just the code. On their own, these bands don't tell you much. You need to know what kind of plugin sits in each one, so here are real examples.
What does each price tier look like in practice?
In practice, a basic WordPress plugin does one job with no outside services, an intermediate plugin connects a form to an outside API, and an advanced plugin handles WooCommerce checkout logic with paid APIs or ships publicly on WordPress.org. Here's each tier matched to plugins I've built.
| Plugin type | Real example I've shipped | Market tier |
|---|---|---|
| Single job, no outside services | (General: shortcodes, admin tweaks, custom emails) | Basic, $500–$2,000 |
| Form plus one outside API | OTP phone verification wired into WPForms for PropAlert | Intermediate, $2,000–$7,000 |
| WooCommerce checkout logic plus paid APIs | Google Maps delivery radius with distance-based fees, and PrintNode kitchen printing, for Whitfield Service Station | Intermediate to advanced |
| Public plugin on WordPress.org | HTTP Security Header (1,000+ installs) and Geo Targeting for Bricks Builder | Advanced |
Tier 1: a small plugin that does one job
This is a WordPress plugin with no outside connections and little or no settings screen. Think of a shortcode that pulls data from custom fields, a change to the WooCommerce order emails, a custom post type registered in code, or a rule that hides a payment method for certain products. WPWeb Elite estimates a simple plugin at about 10 hours of work. If someone quotes you several thousand dollars for something this small, ask what's in it.
Tier 2: a form connected to an outside service
For PropAlert, an Indian real estate data platform, I built custom plugins that add OTP phone verification to WPForms. The visitor enters a phone number, gets a code by SMS, and the form only submits once the code checks out. The code itself isn't long. In a plugin like this, the time usually goes into the details: resend timers, rate limits so nobody can run up your SMS bill, what the visitor sees when a message doesn't arrive, and saving the verified status with the entry. I've written up how I do it in How to add OTP phone verification to WordPress forms.
WPWeb Elite's intermediate tier lists form builders and third-party API integrations by name, at $2,000 to $7,000.
Tier 3: WooCommerce business logic with paid APIs
For Whitfield Service Station in Dover, I built two pieces of custom functionality on WooCommerce. One is a delivery restriction checker. It geocodes the customer's address with the Google Maps Geocoding API, refuses orders outside the delivery radius and charges a delivery fee based on distance. The other sends each new order to a kitchen printer through PrintNode, so staff don't have to keep checking a screen.
This tier costs more because the WooCommerce checkout is where money changes hands, and every edge case needs an answer. What happens if an address won't geocode? What if a customer changes their address after the fee is calculated? What if the printer goes offline at 7pm on a Friday? Testing means placing real orders, start to finish. FreshySites prices complex integrations with a payment processor or proprietary business system at $5,000 to $20,000 or more. Honestly, this is the tier where I'd worry least about finding the cheapest quote and most about finding someone who's done it before.
Plugins like these also have running costs: Google Maps API usage and a PrintNode plan. Check each vendor's current pricing page before you sign off the budget.
Tier 4: a plugin published on WordPress.org
HTTP Security Header is my free WordPress.org plugin. It adds Content-Security-Policy, HSTS and other security headers from a settings screen, and it now has 1,000+ active installs. Geo Targeting for Bricks Builder shows or hides Bricks elements by visitor country, using IPinfo Lite for the lookup.
Neither is huge. Public plugins get expensive because they have to work on sites you'll never see, with different hosts, PHP versions, caching layers and plugin combinations. Every input has to be sanitised and every output escaped. Defaults have to be safe, because a strict Content-Security-Policy switched on by default can break someone's site. Strings need to be translation-ready, the code has to meet the directory's plugin guidelines, and someone has to answer the support forum after launch. The cost guides don't price public plugins separately. If you commission a plugin for public release, expect it to sit in the market's advanced tier, which WPWeb Elite puts at $7,000 to $20,000+, with most of that money going on testing and long-term support, not features.
What pushes a plugin quote up or down?
Outside integrations, who uses the plugin and how much failure handling it needs move a custom WordPress plugin quote more than the feature list does. These six things decide most of the price:
- Integrations. Each outside API adds authentication, error handling and its own fees.
- Who uses it. An admin-only tool can be a bit rough. Anything visitors touch, especially at the WooCommerce checkout, can't be.
- Failure handling. Planning for timeouts, bad data and retries often takes longer than the main feature.
- Settings screens. Hard-coded values are cheaper than settings your team can change. Settings are worth paying for when the rules will change.
- Compatibility. Does it need to work with Elementor or Bricks, future WooCommerce updates and your caching plugin?
- Handover. Documentation, a Git repository and a staging test cost a little more up front and save a lot later.
What do WordPress plugin developers charge per hour?
WordPress plugin developers charge from about $15 to $28 an hour on Upwork to $100 to $175+ an hour for senior US developers, and agencies range from $30 to $275 an hour. Most quotes boil down to hours times rate, and the rate is the part that varies most.
| Hiring route | Typical hourly rate | Source |
|---|---|---|
| Upwork WordPress developers | $15–$28 (median $20) | Upwork |
| Freelancers generally | $15–$75 | WisdmLabs |
| Senior developers on Codeable | $75–$120+ | Codeable |
| Senior US WordPress developers | $100–$175+ | FreshySites |
| Agencies | $30–$275 | WisdmLabs |
For freelancers, FreshySites puts custom plugin projects at $1,000 to $10,000+, against $5,000 to $20,000+ at an agency. A low hourly rate only saves you money if the developer has built something similar before. If they haven't, you're paying for them to learn on your project.
What does a custom plugin cost after launch?
After launch, a custom WordPress plugin needs compatibility updates, any third-party API fees and ongoing support. One US guide prices maintenance for a site with custom functionality at $150 to $250 a month.
A plugin isn't finished the day it goes live. WordPress, PHP and WooCommerce keep shipping new versions, and old code breaks (PHP 8 upgrades are a common culprit). APIs change their terms and prices too. For comparison, commercial plugins often cost $100 to $500 a year per site in licences. If you're weighing up ongoing support, see what a WordPress maintenance retainer covers.
Make sure you own the code
Your contract should give you the full, unobfuscated source code in a Git repository you control. Without it, the plugin only works for as long as the person who wrote it stays available.
How long does a custom plugin take to build?
A simple custom WordPress plugin can take around 10 hours of work, while a complex e-commerce integration can take hundreds of hours (WPWeb Elite). Calendar time is usually longer than the hours suggest, because you'll need to send over API keys, test on staging and sign off edge cases. Anything that touches payments or printing needs a round of real-world testing before launch. The biggest time saver is a tight brief. Write the rule down in plain sentences, including what should happen when things go wrong. My free Project Scope Generator and PRD Generator turn a rough idea into a brief a developer can quote from.
What should you ask a developer before accepting a quote?
Before accepting a custom WordPress plugin quote, ask to see a similar plugin the developer has shipped, how failures are handled, what testing is included and whether you get the source code. These seven questions cover it:
- Can you show me a plugin you've shipped that does something similar?
- What happens when the outside API or service fails?
- Is testing on a staging copy of my site included?
- Which WordPress, PHP and WooCommerce versions will you test against?
- Will I get the source code in my own repository, with setup notes?
- What's the support period after launch, and how will changes be priced?
- Is this a fixed price for a written scope, or hourly?
If the answers are vague, the low quote probably won't stay low.
What's the next step?
Write two or three sentences about what the plugin should do and where it lives: a form, the WooCommerce checkout or the admin. Send them through my contact page or book a 20-minute call. I'll tell you which tier it falls into, and whether an existing plugin would do the job instead. You can see the kind of work I take on at custom WordPress plugins and internal tools.
