
Royal Mail has announced adjustments to its Downstream Access (DSA) rates, with the new rates coming into effect on 30 September 2026. As stated in the most recent customer notification, these changes will apply to Royal Mail DSA products, except for Magazine Subscription costs, which are expected to rise later in the year. The notification says Royal Mail's access prices will rise across its product range by an average of about 25%.
For businesses that depend on direct mail, this represents a major rise; although you can't influence the postage rate, you can review the rest of your mailing process to identify areas where you can cut costs.

What matters for businesses is that an increased postage rate does not mean the same rise in your campaign's total cost.
Many factors other than postage affect a campaign's total cost. Data quality, the format you select, the type of paper, the postage category, and the production and fulfilment processes can all have an impact. Reviewing these aspects before your next campaign could reduce costs and offset some, or even all, of the rise.
If you have campaigns planned for the coming months, review your mailing arrangements now and speak to your provider about the options available before the new rates take effect. When you talk to your provider about rates, you should try to negotiate. Ask whether your volumes qualify for different rates, whether changing your mailing schedule could reduce costs, and whether there are any commercial terms available that are not shown in standard pricing. If you are considering a longer-term arrangement, check what volume commitments or other conditions would apply. Also confirm collection dates, deadlines and any additional charges so you know exactly what you will be paying. A straightforward conversation about your planned campaigns may uncover options that are not immediately obvious from the published rates.
We don't want to adopt a single drastic measure to reduce costs; instead, we should review the entire campaign from start to finish and identify where we can eliminate unnecessary costs.
Although you can't lower the price you pay for postage, you can cut back on what you spend when you send mail to wrong or out-of-date addresses.
Poor data quality can accumulate over time. According to DataIQ research cited by Royal Mail, bad data quality can cost businesses as much as 6% of their annual turnover. Royal Mail also mentions that data can become outdated because people move, businesses close, and customer details change.
You will have to pay for printing, handling and postage if you keep sending out obsolete records, even if the person or business you intended to contact never receives them.
Before your campaign goes to print, review your mailing data and remove records that are no longer accurate or useful. A quarterly check is a sensible starting point, although larger campaigns may justify a review before each mailing. Look for duplicate records, incomplete addresses and contacts who have moved or are no longer suitable for the campaign.
Address verification and change-of-address services can help identify records that need attention. Royal Mail and other providers also offer data cleansing services to improve your database's accuracy. If you manage your data internally, your CRM system or spreadsheet software may also catch common errors.
The key is to make data checking part of your normal campaign process, not something you do only when a problem appears. Clean data means fewer wasted mailings and a better chance of your campaign reaching the people you actually want to reach.
The key issue isn't the extra cost of posting each item; it's whether every item you pay to produce and send has a good chance of reaching the right person.
How long ago did you last carry out a proper review of your mailing data?
Just because a mailing has more pages doesn't mean that it becomes more effective.
You could cut printing and paper use by eliminating pages in your campaign that add little to the main message, making the communication easier to read. Moreover, a simpler format would also help ensure that the final product stays within the requirements of a given postage category.
This also applies to the paper used. Switching from 120gsm to 100gsm will reduce material use without making any noticeable difference to the final mailing. The actual amount saved will vary depending on your printer, paper supplier, order quantity, and the specifications you use, but for several thousand pieces, even a small decrease in cost per item can amount to significant savings. For instance, if the lower paper weight saves you just 2p per item, a mailing of 1,000 pieces would save £20; if your mailings consist of 5,000 items, the total saving could be £100 per campaign. This simple switch can quickly add up over a number of campaigns during the year.
The savings on each item may be small, but when thousands of items are involved, minor production efficiencies can add up.
Before you remove any content or substitute paper stock, check the effect on the final mailing, especially its weight and size. A change that moves an item into a different postage category might cost more than the paper savings.
A major opportunity lies in examining the physical format of your mailings.
To show just how much the format can influence the cost of postage, the current published 2nd Class rate for a Letter weighing up to 100g with Royal Mail is 91 pence, whereas the rate for a Large Letter weighing up to 100g is £1.55. The difference is therefore 64 pence per item. Again, these are the 2nd Class prices set out by Royal Mail, not the DSA rates, but they illustrate why the size, thickness, and weight of a posting matter.
A Royal Mail letter can be up to 240mm × 165mm × 5mm and weigh up to 100g; if the completed item exceeds any of these limits, you may need to send it in an alternative format.
So it is not enough for the item to weigh under 100g; the dimensions and thickness also matter.
A redesign can sometimes make a big difference. For example, reducing the finished size, using fewer pages, altering the way it folds or modifying the method of construction could get the mail within the specifications for a Letter.
To illustrate, a difference of 64p for 10,000 items would amount to £6,400 before considering other costs or any mailing rates that may apply.
The amount you save will vary depending on the service and rates you choose, so check the final dimensions and weight before deciding on the print specification.
The cost of running a mailing campaign includes postage.
If you run your campaigns yourself, you may also have to pay for printing, data preparation, addressing, folding, inserting, sorting, equipment, storage, staff time, and handling returned or undeliverable mail.
Some of these costs appear on an invoice, while the rest are included in the working day and are therefore much harder to spot.
A specialist mail house can combine printing, fulfilling, and mailing into a single process and achieve efficiencies that are hard to obtain on its own. For a given campaign size and specification, outsourcing can lower the total cost per item rather than just adding another supplier.
If you are considering outsourcing your mailing, look beyond the headline price when comparing providers. Ask about their experience with campaigns similar to yours and look for genuine case studies or customer references where available. Make sure the quotation clearly sets out what is included, including production, fulfilment, postage and any additional charges.
Also check turnaround times, especially if your campaign has a fixed collection date or a tight deadline. You should also be comfortable with how the provider handles your data and find out what systems and processes they have in place to keep it secure and accurate.
Finally, think about how well the provider can adapt to your requirements. Can they handle your usual volumes, work with different formats and accommodate changes when a campaign does not go exactly to plan? A provider that understands your requirements, communicates clearly and gives you a transparent view of the total cost may provide greater value than simply choosing the lowest quote.
For example, suppose you handle a 5,000-piece campaign in-house. In that case, you could spend £1,200 on printing, £800 on staff time, £300 on materials and £4,550 on postage. The total would be £6,850, or £1.37 per item.
An overseas campaign could be very different indeed. In this case, if printing and fulfilment cost £1,150 and postage £4,250, the total would be £5,400, or £1.08 per item.
These figures are not typical but illustrate market rates, since actual costs will vary by campaign. The advantage of the calculation is that it lets you compare the total cost of handling the mailing yourself with the cost of having a specialist produce and fulfil it.
The lowest rate does not mean the lowest total campaign cost.
No single solution applies to every mailing campaign.
For one company, the biggest opportunity may be removing outdated addresses. For another company, it might be reducing the number of pages or changing the final format. With a bigger campaign, changing the format might have a more obvious impact on the total cost.
What matters is more than the rise in postage.
For example, imagine a campaign where you can:
These changes shouldn't affect the campaign, since some will make the mailing more efficient while improving the recipient experience.
The outcome doesn't have to be a single major saving; it's simply a matter of spotting a number of smaller costs that you can cut down before they accumulate.
Now is a good time to review the mailing if you plan to run a Direct Mail campaign rather than just accept the higher price.
Make sure the data is checked, review the format, check the weight and dimensions, consider whether all pages are really needed, and compare the cost of handling the mailing yourself with outsourcing both production and fulfilment.
When planning campaigns around the change date, check the collection date and speak to your mailing provider to confirm which rates and commercial terms will apply. The latest customer notification states that campaigns collected on or after 30 September 2026 will be subject to the new DSA rates.
Booking or approving a campaign before 30 September does not necessarily mean the previous rates will apply. This can depend on the mailing service and the terms of your commercial agreement, so confirm the position with your provider before making arrangements.
Royal Mail also offers a range of Business Mail services, with pricing affected by factors such as volume, preparation and the service selected. Eligible customers may be able to access volume discounts or savings on certain barcoded Business Mail products. These arrangements are separate from the DSA rates discussed above, so check which options apply to your campaign.
If you think your campaign may qualify for a discount, ask your mailing provider or Royal Mail account manager to confirm the eligibility requirements. These can include minimum posting volumes and specific preparation or addressing standards. Getting this information before you plan the campaign gives you a clearer picture of the rate you are likely to pay and whether you can make changes to qualify.
The best way to deal with higher postage costs is to make the rest of the campaign work harder.

Published by:
Published on:
August 24, 2026
Role:
Matt here… Business Development Manager at Flow Group. I bring over a decade of diverse consulting experience to the team, having previously worked across the energy, media, and automotive industries..
FAQ
We’ve got you covered. Below are answers to some of the most common queries from businesses like yours.
The best method is to consider the campaign as a whole rather than focusing solely on postage costs. You should examine the quality of your mailing data, as well as the size and weight of the finished item, the type of paper used, the postage category, and the cost of producing and fulfilling the campaign. You will notice that minor changes in several areas can greatly affect the final cost; removing obsolete addresses can reduce wasted production and postage, and switching to a different format or paper type may cut production costs. Redesigning the mailing can also help it meet the requirements of a different postage category. Although you can't control the Royal Mail rate, you can look at other associated costs.
Certainly. If you have an incorrect or out-of-date address, you'll pay for printing, handling, and postage without the letter or package reaching the person or business you intended to contact. This is especially important when sending several thousand items, as you should routinely check your database for duplicate records, incomplete addresses, people who have moved, and businesses that are no longer in operation. Royal Mail provides data cleansing services that can help companies detect address quality problems and individuals who have moved. Clean data also makes it easier to assess campaign results, since you can be more certain the mailings were sent to the intended audience.
That could be the case, especially if the mailing you are currently using is near the maximum limit in terms of size, thickness or weight of another postage category. The item might qualify for a different format if it has a smaller finished size, has fewer pages, has a different fold, or is printed on lighter paper. Nevertheless, you should not make any changes simply because of the weight. Royal Mail’s specifications also account for both dimensions and thickness; for instance, a Letter can be 240mm × 165mm × 5mm and 100g. Before changing your design, compare the potential postage savings with any extra design or printing costs; a cheaper format is only worthwhile if it still serves the role your campaign requires.
It isn't always the case, but you should compare the two properly. If you manage a campaign internally, the real cost includes much more than printing and postage; it also includes staff time, data preparation, addressing, folding, inserting, materials, equipment, storage, and handling. A mailing specialist could possibly combine printing and fulfilment and carry out the preparation necessary for the mailing as part of a single process. In this case, the most appropriate comparison is the total cost per item from when the data is prepared until the mailing is completed, not just postage rates. In some campaigns, outsourcing may remain more cost-effective, while in others it may still make sense to do the work ourselves. What matters is comparing like for like.
Look at the campaign before anything goes to print. Start with the data and remove records that are no longer suitable for mailing. Then check the finished size, thickness and weight of the proposed format and consider whether every page and piece of material is necessary. Review your paper stock and compare the cost of producing the campaign internally with using a specialist mailing provider. Finally, check the postage category and the rates available for your particular mailing. You may not be able to avoid the Royal Mail increase itself, but reviewing these areas can help prevent the increase from simply being added to every other campaign cost.
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