RDS is just a per-hour price, so a t3.micro depending on region and DB engine is about 
20/month for it to be running, plus any storage. If it's multi-AZ it will be more. Your bill should provide a breakdown. Answer from inphinitfx on reddit.com
20/month for it to be running, plus any storage. If it's multi-AZ it will be more. Your bill should provide a breakdown. Answer from inphinitfx on reddit.comAWS
aws.amazon.com › products › database › amazon rds
Managed Relational Database - Amazon RDS Pricing - Amazon Web Services
2 days ago - If you signed up for AWS Free Tier prior to July 15, 2025, you can continue to use RDS for free for up to 12 months on select single-AZ instance databases with up to 750 hours per month. Your usage is aggregated across instance types if using more than one instance.
Cloudchipr
cloudchipr.com › blog › rds-pricing
The Ultimate Guide to AWS RDS Pricing: A Comprehensive Cost Breakdown 2025
Spin up a database on AWS and, before long, an RDS Pricing line sneaks onto your invoice. Handy? Absolutely. Straight-forward? Not always. Every toggle—engine, instance class, storage tier, backup window—nudges that number up or down. If you’d rather steer the meter than chase it, you need to know which levers cost what. This guide lays those levers on the table. We’ll examine how each database engine is priced, why two identically sized instances can bill very differently, and where storage choices quietly stack dollars over time.
How to find out what exactly is causing the cost for my RDS instance
RDS is just a per-hour price, so a t3.micro depending on region and DB engine is about $12 - $20/month for it to be running, plus any storage. If it's multi-AZ it will be more. Your bill should provide a breakdown. More on reddit.com
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November 3, 2022amazon web services - AWS RDS Pricing - Stack Overflow
I just followed a tutorial to create an RDS database. Since the time of creating my will I be charged every hour for which my database instance is active or will I be charged for everytime I make a... More on stackoverflow.com
AWS rds pricing help.
Hello, You're welcome to utilize our AWS Pricing Calculator which helps with configuring a cost estimate that fits your unique business or personal needs with AWS products and services, here: http://go.aws/calculator . For an in-depth quote you're welcome to reach out to our Sales team, here: https://go.aws/3LR9MSP . - Roman Z. More on reddit.com
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October 4, 2023Confused about RDS pricing
Yes. On the pricing page (https://aws.amazon.com/rds/mysql/pricing/) it's listed as General Purpose or Provisioned IOPS (SSD), or Magnetic Storage. For Provisioned you also pay for IOPS. You also pay to store backups and for bandwidth in some cases.
More on reddit.com 10
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November 10, 2016Videos
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AWS
calculator.aws
AWS Pricing Calculator
AWS Pricing Calculator lets you explore AWS services, and create an estimate for the cost of your use cases on AWS.
CloudZero
cloudzero.com › home › blog › a beginner’s guide to amazon rds pricing
A Beginner’s Guide To Amazon RDS Pricing
June 23, 2025 - Pricing is tiered and starts at $0.09 per GB for the first 10 TB per month. Data transfer out to the internet is free for 100GB each month, spanning all AWS regions and AZs — excluding GovCloud and China.
Amazon EC2
instances.vantage.sh › rds
Amazon RDS Instance Comparison
A free and easy-to-use tool for comparing RDS Instance features and prices.
Reddit
reddit.com › r/aws › how to find out what exactly is causing the cost for my rds instance
r/aws on Reddit: How to find out what exactly is causing the cost for my RDS instance
November 3, 2022 -
Hello,
I am running a db.t3.micro rds for my discord bot, and the average monthly costs are $20. It seems a bit much, as there is max maybe a couple of interactions per hour with the bot and, therefore, the rds instance.
Is there a good way to check what exactly is causing the cost?
I also see that the db.Transactions.xact_commit.avg value is constantly on 2.7~ even when there are no interactions with the bot for multiple hours.
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RDS is just a per-hour price, so a t3.micro depending on region and DB engine is about $12 - $20/month for it to be running, plus any storage. If it's multi-AZ it will be more. Your bill should provide a breakdown.
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Did you write your own bot, or is it a bot you’ve found elsewhere? If it’s your own bot, and you wrote the code, you could consider re-architecting on dynamodb. Otherwise your other option is to manage your own database on EC2.
Amazon Web Services
amazonaws.cn › en › rds › pricing
Amazon RDS Pricing
2 days ago - Amazon RDS T4g and T3 DB instances run in Unlimited mode, which means that you will be charged if your average CPU utilization over a rolling 24-hour period exceeds the baseline of the instance. CPU Credits are charged at ¥0.477 per vCPU-Hour.
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The simple answer is that you're charged for every hour your RDS instance is running, and (broadly) not how much you actually use it. There may be some small charges for large volumes of queries, but keeping the instance running is the main cost.
However if you're a new customer you can have a small RDS instance free for a year. Look for 'free-tier eligible' on the management console.
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AWS has detailed pricing category for different DB which should be clear enough. Taking mysql "On-Demand DB Instances" as an example, it charges based on the type and duration, however for RDS T3 DB instances which uses unlimited mode it may involve extra fees if your average CPU usage exceed baseline.
NetApp
netapp.com › home › blog › aws-cvo-blg-aws-rds-pricing-explained
AWS RDS Pricing Explained | NetApp
April 25, 2025 - Your total AWS RDS pricing depends on the database engine you choose. AWS offers six database engines—Amazon Aurora, MySQL, PostgreSQL, MariaDB, Microsoft SQL Server, and Oracle. After choosing a database engine, you cannot usually change it. However, you can optimize performance, memory, performance, or input/output (I/O). Open-source databases MySQL, Postgres, and MariaDB open-source databases are priced similarly—sharing the same pricing for provisioned I/O, RDS data transfer costs, and storage.
AWS Fundamentals
awsfundamentals.com › blog › aws-rds-pricing
Understanding AWS RDS Pricing: A Comprehensive Guide
AWS RDS pricing is based on several cost components, including instance hourly price, storage costs, data transfer costs, and other factors.
AWS
aws.amazon.com › databases › amazon rds › amazon rds previous generation database instances
RDS previous generation
2 days ago - Except as otherwise noted, our prices are exclusive of applicable taxes and duties, including VAT and applicable sales tax. For customers with a Japanese billing address, use of AWS is subject to Japanese Consumption Tax. Learn more. For both Single-AZ and Multi-AZ deployments, pricing is per DB Instance-hour consumed, from the time a DB Instance is launched until it is terminated. Each partial DB Instance-hour consumed will be billed as a full hour. Amazon RDS Reserved Instances give you the option to reserve capacity within a datacenter and in turn receive a significant discount on the hourly charge for instances that are covered by the reservation.
AWS
aws.amazon.com › products › database › amazon rds
Amazon RDS Custom
1 week ago - Amazon RDS Custom is architected to host web and mobile applications that are built to operate at large scale and need high throughput, massive scalability, and highly available databases through a flexible pay-per-usage pricing model, which fits the variable usage patterns of these applications.
Bytebase
bytebase.com › blog › understanding-aws-rds-pricing
Understanding AWS RDS Pricing (2025)
AWS RDS follows a pay-as-you-go pricing model with no upfront costs or long-term commitments required. The pricing structure is designed to be flexible, allowing you to pay only for the resources you consume.
TigerData
tigerdata.com › blog › understanding-rds-pricing-and-costs
Why Is RDS So Expensive? Understanding RDS Pricing ...
February 7, 2024 - However, you will pay for data transfer costs from RDS to S3. These will be charged per GB of snapshot size, and the price per GB varies per region. Data transfer costs are another factor to consider. Understanding the various data transfer scenarios and associated costs will help optimize your expenses. AWS ...
Amazon Web Services
aws.amazon.com › savings plans › database
Database Savings Plan
2 days ago - This savings plans automatically apply to eligible serverless and provisioned instance usage regardless of engine, instance family, size, deployment option, or AWS Region with no upfront payment. For example, with Database Savings Plan, you can change between instance types such as Aurora db.r7g and db.r8g instances, shift a workload from EU (Ireland) to US (Ohio), modernize from Amazon RDS for Oracle to Amazon Aurora PostgreSQL or from RDS to Amazon DynamoDB and still benefit from the discounted rates.
Finout
finout.io › blog › understanding-aws-pricing
Understanding AWS Pricing for EC2, S3, EBS, RDS, & More
May 22, 2025 - S3 (Simple Storage Service): Priced by storage usage, data retrieval, and data transfer. Different storage classes (Standard, Intelligent-Tiering, Glacier) have different rates. EBS (Elastic Block Store): Costs depend on the volume type (SSD, HDD) and storage size. Snapshots incur additional charges. RDS (Relational Database Service): Charged based on the database instance type, storage, and data transfer.
AWS
aws.amazon.com › products › database › amazon rds
Managed SQL Database - Amazon Relational Database Service (RDS) - AWS
2 days ago - RDS allows customers to create a new database in minutes and offers flexibility to customize databases to meet their needs across eight engines and two deployment options. Customers can optimize performance with features like with two readable standbys, optimized writes and reads, and AWS Graviton3-based instances, and they can choose from multiple pricing options to effectively manage costs.
Reddit
reddit.com › r/aws › aws rds pricing help.
r/aws on Reddit: AWS rds pricing help.
October 4, 2023 -
Can someone shed some light on how RDS pricing works?
There seems to be 3 components here - the instance, storage and iops. Instance and storage are fixed and you can calculate for a month.
But what about iops? IIUC I'll be charged every time I read/write to the tables with increased cost if I hit a spike in traffic or run some queries on very big tables?
https://aws.amazon.com/ebs/pricing/
This link says gp3 has 3000 iops free. How do I estimate my iops?
Then there seems to be a separate charge for throughput? 125MB/s and then an additional charge per MB/s-month. Not sure how to calculate this. What happens if I had a sudden spike where I went to 500 MB/s for an hour. How would that get converted to MB/s-month.
All this seems like a recipe to get hit by an unexpected large bill. Would it be better to go with a managed db on lightsail which has a fixed monthly cost?
Thanks.
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Hello, You're welcome to utilize our AWS Pricing Calculator which helps with configuring a cost estimate that fits your unique business or personal needs with AWS products and services, here: http://go.aws/calculator . For an in-depth quote you're welcome to reach out to our Sales team, here: https://go.aws/3LR9MSP . - Roman Z.
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Just don't provision more than the free levels of IOPS and throughput
UnoGeeks
unogeeks.com › home › blog › aws rds pricing
AWS RDS Pricing
December 1, 2023 - AWS RDS (Relational Database Service) pricing for Amazon RDS instances is based on several factors, including the database engine, instance type, storage, and data transfer.
Economize
economize.cloud › blog › aws-rds-pricing
AWS RDS Pricing Guide – Storage, Instances & Deployments
AWS RDS Pricing Guide – Storage, Instances & Deployments