1. Two agreements, one destination
Korea is covered by both the China-Korea Free Trade Agreement and RCEP. Both offer preferential rates on Chinese-origin goods. They are not the same document, not the same rules, and not the same rate schedule.
For an importer, the choice affects duty. For an exporter, it affects what has to be documented and how.
2. The rate comparison
The China-Korea FTA entered into force in December 2015 and has been phasing down since. RCEP entered into force for both countries at the start of 2022.
Because the bilateral agreement started earlier, its schedule is generally deeper for most industrial lines. Many products already sit at zero under the bilateral agreement while RCEP still has staging to run.
But the reverse occurs. Some lines are excluded or held at a higher rate under the bilateral agreement and treated differently under RCEP. Agricultural products are the usual setting for this.
Check the specific HS line in the current year against both agreements. Last year’s figure is not reliable, because both schedules step down on 1 January.
3. The origin rule difference that decides cases
Cumulation is where the two agreements diverge in a way that actually changes outcomes.
Under the China-Korea FTA, cumulation operates between the two parties.
Under RCEP, cumulation extends across fifteen economies. Material originating in Japan, Australia, New Zealand or an ASEAN member counts as originating for the regional value content calculation.
For a product assembled in China from a mix of Korean, Japanese and domestic components, this can move a calculation from below the threshold to comfortably above it. The same inputs, the same factory, a different agreement, a different answer.
If a meaningful share of your inputs comes from RCEP members other than Korea, run the RCEP calculation before concluding that the bilateral route is the only option.
4. Administrative trade-offs
Faster issuance and familiar procedures favour the bilateral certificate, particularly for exporters who file regularly and have the process settled.
RCEP’s advantage is flexibility: one certificate format covering fifteen markets means an exporter shipping to Korea, Japan and Vietnam can work from one rule set rather than three.
That consolidation has a cost. The RCEP origin rules are more complex, and the calculation has more moving parts. For a company with thin compliance capacity, the simpler bilateral route may be the better operational choice even where RCEP offers a marginally better rate.
5. Reading the Korean tariff schedule
Korean tariff lines are subdivided more finely than the six-digit HS level. A Chinese ten-digit code rarely maps one-to-one.
The rate query tools usually perform the mapping. Where one Chinese code returns several Korean lines, the product’s specific characteristics determine which applies.
This is where the goods description on the certificate does real work. A description reading “other” leaves the destination officer to decide, and they will ask.
6. Common errors when choosing
Assuming the bilateral rate is always better
True for most industrial goods, false for enough lines that the assumption costs money.
Filing the bilateral certificate and discovering RCEP would have qualified when the bilateral did not
The registration was made on the wrong basis. The certificate is genuine and the preference does not hold.
Comparing rates without comparing rules
A lower rate attached to an origin rule the product cannot satisfy is not a lower rate. It is a rejected claim.
Using an out-of-date schedule
Both agreements step down annually. A quotation built on last year’s rate drifts every January.
7. What the importer should ask
If you are importing from China and claiming a preference, ask your supplier two questions.
Which agreement are you filing under, and why that one rather than the other?
Under which origin criterion, and can you show the calculation?
The second question is the one that matters. A supplier who cannot answer it has not done the determination, and the certificate is a representation without a basis.
8. Closing view
The Korea market rewards exporters who revisit the choice rather than settling into a habit.
Two agreements, annual step-downs, and rules that diverge on cumulation. Checking once at onboarding and never again is how a company ends up leaving money on the table for years without noticing.
*This article is based on the China-Korea Free Trade Agreement and the Regional Comprehensive Economic Partnership as published by China’s Ministry of Commerce Free Trade Area Service Network. Rate and rule queries should use current-year data.*